Article(id=1200500175811768702, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1200500165426672625, articleNumber=null, orderNo=null, doi=10.16438/j.0513-4870.2023-1265, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1699372800000, receivedDateStr=2023-11-08, revisedDate=1708704000000, revisedDateStr=2024-02-24, acceptedDate=null, acceptedDateStr=null, onlineDate=1764151146127, onlineDateStr=2025-11-26, pubDate=1718121600000, pubDateStr=2024-06-12, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1764151146127, onlineIssueDateStr=2025-11-26, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1764151146127, creator=13701087609, updateTime=1764151146127, updator=13701087609, issue=Issue{id=1200500165426672625, tenantId=1146029695717560320, journalId=1189982191388893191, year='2024', volume='59', issue='6', pageStart='1509', pageEnd='1896', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1764151143651, creator=13701087609, updateTime=1764225143180, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1200810542001680840, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1200500165426672625, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1200810542001680841, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1200500165426672625, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=1765, endPage=1772, ext={EN=ArticleExt(id=1200500176537383357, articleId=1200500175811768702, tenantId=1146029695717560320, journalId=1189982191388893191, language=EN, title=Research and determination of related substances in flumazenil, columnId=1190335348761793317, journalTitle=Acta Pharmaceutica Sinica, columnName=Original Articles, runingTitle=null, highlight=null, articleAbstract=
A high performance liquid chromatography (HPLC) method utilizing correction factors was established for the quantitative detection of related substances in flumazenil. Separation was achieved using an Agilent Pursuit XRs C18 column (250 mm × 4.6 mm, 5 μm) with an isocratic elution of dilute phosphoric acid, methanol, and tetrahydrofuran as the mobile phases. Correction factors calculated from a standard curve method were applied to determine the impurity content. The quantification of impurities in flumazenil was conducted using both external standard and correction factor methods, followed by validation and comparison of the two. For the identification of degradation products, a forced degradation approach was employed to prepare a flumazenil degradation solution, and the resulting impurities were confirmed by LC-MS analysis. The separation of flumazenil and its impurities was found to be efficient. The limits of quantification for impurities A, B, D, and E were established at 0.169 9, 0.314 7, 0.143 9, and 0.270 8 ng, respectively, with the limits of detection at 0.055 8, 0.096 9, 0.048 8, and 0.089 0 ng. These impurities demonstrated a strong linear relationship across the concentration ranges of 0.034 9-7.847 0, 0.038 7-8.710 7, 0.034 6-7.794 1, and 0.032 4-7.292 8 µg·mL-1, respectively (n = 7). The method achieved average recoveries between 98.25% and 99.42%, with an RSD of less than 2.0% (n = 9), indicating high accuracy. The external standard and correction factor methods were used to determine the related substances in flumazenil, and the results of the two methods were consistent. The established HPLC method is characterized by its high accuracy, sensitivity, and repeatability, and is suitable for determining related substances in flumazenil.
, correspAuthors=Yi-ping GU, authorNote=null, correspAuthorsNote=null, copyrightStatement=Copyright ©2024 Acta Pharmaceutica Sinica. All rights reserved., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=Xue-yan MIAO, Yuan YANG, Si-si LU, Jin-mei MO, Lin-kai HUANG, Jia-jun WEI, Yi-ping GU), CN=ArticleExt(id=1200500179452424840, articleId=1200500175811768702, tenantId=1146029695717560320, journalId=1189982191388893191, language=CN, title=氟马西尼有关物质的研究与测定, columnId=1190335348896011050, journalTitle=药学学报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=
建立高效液相色谱法采用校正因子测定氟马西尼原料中有关杂质。采用Agilent Pursuit XRs C18 (250 mm × 4.6 mm, 5 μm) 色谱柱, 以稀磷酸溶液、甲醇和四氢呋喃为流动相, 等度洗脱。采用标准曲线法测定校正因子, 通过校正因子计算杂质含量。并用外标法验证校正因子方法的合理性、准确性和可行性。通过强制降解制备含有降解产物的氟马西尼降解溶液; 采用LC-MS对降解产生的杂质进行结构确证。结果表明, 氟马西尼和各杂质之间均分离良好, 杂质A、杂质B、杂质D和杂质E的定量限分别为0.169 9、0.314 7、0.143 9和0.270 8 ng, 检测限分别为0.055 8、0.096 9、0.048 8和0.089 0 ng, 质量浓度分别在0.034 9~7.847 0、0.038 7~8.710 7、0.034 6~7.794 1和0.032 4~7.292 8 µg·mL-1内, 线性关系良好(n = 7)。平均回收率在98.25%~99.42%之间, 相对标准偏差(RSD) 均小于2.0% (n = 9), 方法的准确度高。采用外标法和校正因子法测定氟马西尼有关物质, 两种方法结果一致。建立的HPLC方法准确度和灵敏度高、重复性好, 可用于氟马西尼有关物质的测定。
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, copyrightStatement=版权所有©《药学学报》编辑部2024, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=LoVabsBwDEuYV4cflXvN6A==, magXml=VOQWKouA+d6dc2rIRAU5ng==, pdfUrl=null, pdf=d8af7RFy8Vj7cH813Dp53w==, pdfFileSize=1020980, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=LPJa2hzyqCh7CY70yzMpYA==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=UKBgHIH918vDSfq/lcQLtA==, mapNumber=null, authorCompany=null, fund=null, authors=
, authorsList=缪雪艳, 杨园, 陆思思, 莫金梅, 黄琳凯, 韦佳均, 谷亦平)}, authors=[Author(id=1201118426791113046, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1200500175811768702, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1201118427013411176, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1200500175811768702, authorId=1201118426791113046, language=EN, stringName=Xue-yan MIAO, firstName=Xue-yan, middleName=null, lastName=MIAO, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, address=1. School of Public Health, Guilin Medical University, Guilin 541199, China
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3, address=3. NMPA Key Laboratory for Quality Research and Control of Drug Products, Wuhan Institute for Drug and Medical Device Control, Wuhan 430075, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1201118427571253661, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1200500175811768702, authorId=1201118427340566917, language=CN, stringName=杨园, firstName=园, middleName=null, lastName=杨, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
3, #, address=3.武汉药品医疗器械检验所, 国家药品监督管理局药物制剂质量研究与控制重点实验室, 湖北 武汉 430075, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1201118426652700997, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1200500175811768702, xref=null, ext=[AuthorCompanyExt(id=1201118426669478215, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1200500175811768702, companyId=1201118426652700997, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=3. NMPA Key Laboratory for Quality Research and Control of Drug Products, Wuhan Institute for Drug and Medical Device Control, Wuhan 430075, China), AuthorCompanyExt(id=1201118426682061128, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1200500175811768702, companyId=1201118426652700997, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=3.武汉药品医疗器械检验所, 国家药品监督管理局药物制剂质量研究与控制重点实验室, 湖北 武汉 430075)])]), Author(id=1201118427718054320, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1200500175811768702, orderNo=2, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1201118427894215099, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1200500175811768702, authorId=1201118427718054320, language=EN, stringName=Si-si LU, firstName=Si-si, middleName=null, lastName=LU, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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HPLC chromatograms of flumazenil and degradation test. a: Systematic suitability solution ①; b: Systematic suitability solution ②; c: Solvent; d: 0.1% reference; e: Flumazenil; f: Photolytic test; g: Thermal test; h: Acid test; i: Alkaline test; j: Oxidation test. 1: Flumazenil; 2: Impurity A; 3: Impurity D; 4: Impurity G; 5: Impurity E; 6: Impurity B , figureFileSmall=h9oQkLdSYDB7/iIEUFuulQ==, figureFileBig=4SmCWRsBIcX0AYpc2plwxA==, tableContent=null), ArticleFig(id=1201118434303111869, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1200500175811768702, language=EN, label=null, caption=null, figureFileSmall=5fw2dI0kJ1nzxgn2856TVw==, figureFileBig=7g9lE88FtXkcg1eFmJuEzQ==, tableContent=null), ArticleFig(id=1201118434454106827, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1200500175811768702, language=CN, label=Figure 2, caption=
The DAD spectra of the related impurities. A: Impurity 2; B: Impurity 3; C: Impurity 4; D: Impurity 6 , figureFileSmall=5fw2dI0kJ1nzxgn2856TVw==, figureFileBig=7g9lE88FtXkcg1eFmJuEzQ==, tableContent=null), ArticleFig(id=1201118434584130254, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1200500175811768702, language=EN, label=null, caption=null, figureFileSmall=Qvs/Hpzp9QXOOLfBvoltxQ==, figureFileBig=mAhz4jM/SNlb2mXpj0pKCA==, tableContent=null), ArticleFig(id=1201118434768679638, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1200500175811768702, language=CN, label=Figure 3, caption=
Mass spectrograms of the related impurities. A: Impurity 2; B: Impurity 3; C: Impurity 4; D: Impurity 6 , figureFileSmall=Qvs/Hpzp9QXOOLfBvoltxQ==, figureFileBig=mAhz4jM/SNlb2mXpj0pKCA==, tableContent=null), ArticleFig(id=1201118434911285987, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1200500175811768702, language=EN, label=null, caption=null, figureFileSmall=ZjYZrf2aLCU5zr2+X67IRQ==, figureFileBig=xeN+xDCY2zV9s7A1kagKpA==, tableContent=null), ArticleFig(id=1201118435041309413, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1200500175811768702, language=CN, label=Figure 4, caption=
The structures of flumazenil and impurities , figureFileSmall=ZjYZrf2aLCU5zr2+X67IRQ==, figureFileBig=xeN+xDCY2zV9s7A1kagKpA==, tableContent=null), ArticleFig(id=1201118435221664495, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1200500175811768702, language=EN, label=null, caption=null, figureFileSmall=HDSjRRjRNUoF6nnYfnMuZQ==, figureFileBig=8VMvJEaOkjY4265WA534ag==, tableContent=null), ArticleFig(id=1201118435339105013, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1200500175811768702, language=CN, label=Figure 5, caption=
Fragmentation patterns of [M+H]+ ion of impurity 4 , figureFileSmall=HDSjRRjRNUoF6nnYfnMuZQ==, figureFileBig=8VMvJEaOkjY4265WA534ag==, tableContent=null), ArticleFig(id=1201118435481711356, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1200500175811768702, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| Analyte | Linear equation | Linear range/µg·mL-1 | R2 | LOQ/ng | LOD/ng |
| Flumazenil | Y = 60.02C - 0.294 | 0.039 7-8.928 0 | 1.000 0 | 0.575 1 | 0.163 1 |
| Impurity A | Y = 66.97C - 0.352 | 0.034 9-7.847 0 | 0.999 9 | 0.169 9 | 0.055 8 |
| Impurity B | Y = 66.30C + 0.515 | 0.038 7-8.710 7 | 0.999 9 | 0.314 7 | 0.096 9 |
| Impurity D | Y = 92.93C + 0.951 | 0.034 6-7.794 1 | 0.999 9 | 0.143 9 | 0.048 8 |
| Impurity E | Y = 74.09C + 0.028 | 0.032 4-7.292 8 | 0.999 9 | 0.270 8 | 0.089 0 |
), ArticleFig(id=1201118435653677827, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1200500175811768702, language=CN, label=Table 1, caption=
Linear equation, limit of quantification (LOQ) and limit of detection (LOD)
, figureFileSmall=null, figureFileBig=null, tableContent=
| Analyte | Linear equation | Linear range/µg·mL-1 | R2 | LOQ/ng | LOD/ng |
| Flumazenil | Y = 60.02C - 0.294 | 0.039 7-8.928 0 | 1.000 0 | 0.575 1 | 0.163 1 |
| Impurity A | Y = 66.97C - 0.352 | 0.034 9-7.847 0 | 0.999 9 | 0.169 9 | 0.055 8 |
| Impurity B | Y = 66.30C + 0.515 | 0.038 7-8.710 7 | 0.999 9 | 0.314 7 | 0.096 9 |
| Impurity D | Y = 92.93C + 0.951 | 0.034 6-7.794 1 | 0.999 9 | 0.143 9 | 0.048 8 |
| Impurity E | Y = 74.09C + 0.028 | 0.032 4-7.292 8 | 0.999 9 | 0.270 8 | 0.089 0 |
), ArticleFig(id=1201118435813061389, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1200500175811768702, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| Parameter | Change | Resolution | | Relative retention time |
| Impurity A and D | Impurity D and G | Impurity G and E | Impurity E and B | Impurity B and flumazenil | Impurity A | Impurity D | Impurity G | Impurity E | Impurity B |
| Wavelength/nm | 230 | 3.15 | 9.20 | 2.12 | 3.15 | 10.00 | | 0.40 | 0.45 | 0.60 | 0.65 | 0.72 |
| 228 | 3.15 | 9.20 | 2.12 | 3.15 | 10.01 | 0.40 | 0.45 | 0.60 | 0.65 | 0.72 |
| 232 | 3.15 | 9.20 | 2.12 | 3.16 | 10.00 | 0.40 | 0.45 | 0.60 | 0.65 | 0.72 |
| Flow rate/mL·min-1 | 0.8 | 3.08 | 8.85 | 2.03 | 2.99 | 9.46 | 0.40 | 0.44 | 0.60 | 0.65 | 0.72 |
| 1.2 | 2.80 | 8.38 | 1.98 | 2.70 | 9.10 | 0.40 | 0.44 | 0.60 | 0.65 | 0.72 |
| Column temperature /℃ | 33 | 2.94 | 8.51 | 1.95 | 3.06 | 8.88 | 0.40 | 0.44 | 0.60 | 0.64 | 0.72 |
| 37 | 2.88 | 8.54 | 2.01 | 2.51 | 9.28 | 0.40 | 0.45 | 0.60 | 0.65 | 0.71 |
| Mobile phase ratio | 82∶11∶7 | 3.81 | 10.61 | 2.30 | 3.86 | 11.17 | 0.39 | 0.44 | 0.60 | 0.64 | 0.72 |
| 78∶15∶7 | 1.64 | 16.91 | 6.18 | 1.95 | 12.45 | 0.32 | 0.33 | 0.55 | 0.66 | 0.70 |
| 82∶13∶5 | 2.47 | 15.20 | 5.01 | 2.64 | 12.24 | 0.33 | 0.36 | 0.56 | 0.65 | 0.70 |
| 78∶13∶9 | 3.46 | 10.42 | 2.35 | 3.38 | 11.16 | 0.40 | 0.44 | 0.60 | 0.65 | 0.72 |
| Mobile phase pH | 1.8 | 4.21 | 11.80 | 3.26 | 2.47 | 12.66 | 0.37 | 0.41 | 0.58 | 0.64 | 0.69 |
| 2.2 | 2.84 | 10.78 | 2.55 | 3.81 | 10.61 | 0.40 | 0.44 | 0.60 | 0.65 | 0.73 |
| Column (250 mm × 4.6 mm, 5 μm, C18) | Amethyst | 2.46 | 11.10 | 2.18 | 3.99 | 10.71 | 0.42 | 0.45 | 0.61 | 0.65 | 0.73 |
| Hypersil | 1.11 | 8.57 | 2.31 | 1.66 | 6.70 | 0.50 | 0.512 | 0.68 | 0.74 | 0.78 |
| Develosil | / | 10.12 | 2.25 | 2.92 | 7.94 | 0.40 | 0.40 | 0.61 | 0.66 | 0.74 |
), ArticleFig(id=1201118435985027863, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1200500175811768702, language=CN, label=Table 2, caption=
Results of durability test. /: The retention time of impurity A and impurity D was consistent
, figureFileSmall=null, figureFileBig=null, tableContent=
| Parameter | Change | Resolution | | Relative retention time |
| Impurity A and D | Impurity D and G | Impurity G and E | Impurity E and B | Impurity B and flumazenil | Impurity A | Impurity D | Impurity G | Impurity E | Impurity B |
| Wavelength/nm | 230 | 3.15 | 9.20 | 2.12 | 3.15 | 10.00 | | 0.40 | 0.45 | 0.60 | 0.65 | 0.72 |
| 228 | 3.15 | 9.20 | 2.12 | 3.15 | 10.01 | 0.40 | 0.45 | 0.60 | 0.65 | 0.72 |
| 232 | 3.15 | 9.20 | 2.12 | 3.16 | 10.00 | 0.40 | 0.45 | 0.60 | 0.65 | 0.72 |
| Flow rate/mL·min-1 | 0.8 | 3.08 | 8.85 | 2.03 | 2.99 | 9.46 | 0.40 | 0.44 | 0.60 | 0.65 | 0.72 |
| 1.2 | 2.80 | 8.38 | 1.98 | 2.70 | 9.10 | 0.40 | 0.44 | 0.60 | 0.65 | 0.72 |
| Column temperature /℃ | 33 | 2.94 | 8.51 | 1.95 | 3.06 | 8.88 | 0.40 | 0.44 | 0.60 | 0.64 | 0.72 |
| 37 | 2.88 | 8.54 | 2.01 | 2.51 | 9.28 | 0.40 | 0.45 | 0.60 | 0.65 | 0.71 |
| Mobile phase ratio | 82∶11∶7 | 3.81 | 10.61 | 2.30 | 3.86 | 11.17 | 0.39 | 0.44 | 0.60 | 0.64 | 0.72 |
| 78∶15∶7 | 1.64 | 16.91 | 6.18 | 1.95 | 12.45 | 0.32 | 0.33 | 0.55 | 0.66 | 0.70 |
| 82∶13∶5 | 2.47 | 15.20 | 5.01 | 2.64 | 12.24 | 0.33 | 0.36 | 0.56 | 0.65 | 0.70 |
| 78∶13∶9 | 3.46 | 10.42 | 2.35 | 3.38 | 11.16 | 0.40 | 0.44 | 0.60 | 0.65 | 0.72 |
| Mobile phase pH | 1.8 | 4.21 | 11.80 | 3.26 | 2.47 | 12.66 | 0.37 | 0.41 | 0.58 | 0.64 | 0.69 |
| 2.2 | 2.84 | 10.78 | 2.55 | 3.81 | 10.61 | 0.40 | 0.44 | 0.60 | 0.65 | 0.73 |
| Column (250 mm × 4.6 mm, 5 μm, C18) | Amethyst | 2.46 | 11.10 | 2.18 | 3.99 | 10.71 | 0.42 | 0.45 | 0.61 | 0.65 | 0.73 |
| Hypersil | 1.11 | 8.57 | 2.31 | 1.66 | 6.70 | 0.50 | 0.512 | 0.68 | 0.74 | 0.78 |
| Develosil | / | 10.12 | 2.25 | 2.92 | 7.94 | 0.40 | 0.40 | 0.61 | 0.66 | 0.74 |
), ArticleFig(id=1201118436110856990, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1200500175811768702, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| Instrument | Column | Correction factor |
| A | B | D | E |
| Agilent1260 | Agilent Pursuit XRs C18 | 0.896 1 | 0.905 3 | 0.645 8 | 0.810 1 |
| Amethyst C18 | 0.899 5 | 0.913 7 | 0.661 2 | 0.821 3 |
| Waters e2695 | CAPCELL PAK C18 | 0.902 2 | 0.904 5 | 0.647 9 | 0.811 3 |
| Vanquish | Inertsil ODS-3 | 0.879 1 | 0.899 4 | 0.634 7 | 0.789 7 |
| Average | | 0.894 2 | 0.905 7 | 0.647 4 | 0.808 1 |
| RSD/% | | 1.2 | 0.7 | 1.7 | 1.6 |
), ArticleFig(id=1201118436257657638, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1200500175811768702, language=CN, label=Table 3, caption=
The correction factor of different instruments and chromatographic columns
, figureFileSmall=null, figureFileBig=null, tableContent=
| Instrument | Column | Correction factor |
| A | B | D | E |
| Agilent1260 | Agilent Pursuit XRs C18 | 0.896 1 | 0.905 3 | 0.645 8 | 0.810 1 |
| Amethyst C18 | 0.899 5 | 0.913 7 | 0.661 2 | 0.821 3 |
| Waters e2695 | CAPCELL PAK C18 | 0.902 2 | 0.904 5 | 0.647 9 | 0.811 3 |
| Vanquish | Inertsil ODS-3 | 0.879 1 | 0.899 4 | 0.634 7 | 0.789 7 |
| Average | | 0.894 2 | 0.905 7 | 0.647 4 | 0.808 1 |
| RSD/% | | 1.2 | 0.7 | 1.7 | 1.6 |
), ArticleFig(id=1201118436421235501, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1200500175811768702, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| Instrument | Column | Relative retention time |
| A | B | D | E | G |
| Agilent1260 | Agilent Pursuit XRs C18 | 0.40 | 0.72 | 0.45 | 0.65 | 0.60 |
| Amethyst C18 | 0.42 | 0.73 | 0.45 | 0.65 | 0.61 |
| Waters e2695 | CAPCELL PAK C18 | 0.41 | 0.69 | 0.43 | 0.66 | 0.61 |
| Vanquish | Inertsil ODS-3 | 0.40 | 0.72 | 0.44 | 0.67 | 0.61 |
| Average | | 0.41 | 0.72 | 0.44 | 0.66 | 0.61 |
| RSD/% | | 2.3 | 2.4 | 2.2 | 1.5 | 0.8 |
), ArticleFig(id=1201118436593201974, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1200500175811768702, language=CN, label=Table 4, caption=
Relative retention time of 5 impurities
, figureFileSmall=null, figureFileBig=null, tableContent=
| Instrument | Column | Relative retention time |
| A | B | D | E | G |
| Agilent1260 | Agilent Pursuit XRs C18 | 0.40 | 0.72 | 0.45 | 0.65 | 0.60 |
| Amethyst C18 | 0.42 | 0.73 | 0.45 | 0.65 | 0.61 |
| Waters e2695 | CAPCELL PAK C18 | 0.41 | 0.69 | 0.43 | 0.66 | 0.61 |
| Vanquish | Inertsil ODS-3 | 0.40 | 0.72 | 0.44 | 0.67 | 0.61 |
| Average | | 0.41 | 0.72 | 0.44 | 0.66 | 0.61 |
| RSD/% | | 2.3 | 2.4 | 2.2 | 1.5 | 0.8 |
), ArticleFig(id=1201118436731614015, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1200500175811768702, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| Sample No. | Impurity/% |
| A★ | A▲ | B★ | B▲ | D★ | D▲ | E★ | E▲ | G★ | G▲ | Total |
| CSU967 | 0.002 | 0.002 | / | / | 0.007 | 0.007 | / | / | 0.013 | 0.013 | 0.022 |
| EXL5K-BM | / | / | / | / | 0.005 | 0.005 | / | / | 0.006 | 0.006 | 0.011 |
| F1617092 | / | / | / | / | 0.014 | 0.014 | / | / | 0.032 | 0.032 | 0.046 |
), ArticleFig(id=1201118436857443141, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1200500175811768702, language=CN, label=Table 5, caption=
Results of impurities content determination of samples (n = 3). / means no detected; ★Calculate the content by using the impurity as the reference substance; ▲Calculate the content by using the flumazenil as the reference substance and adding a correction factor
, figureFileSmall=null, figureFileBig=null, tableContent=
| Sample No. | Impurity/% |
| A★ | A▲ | B★ | B▲ | D★ | D▲ | E★ | E▲ | G★ | G▲ | Total |
| CSU967 | 0.002 | 0.002 | / | / | 0.007 | 0.007 | / | / | 0.013 | 0.013 | 0.022 |
| EXL5K-BM | / | / | / | / | 0.005 | 0.005 | / | / | 0.006 | 0.006 | 0.011 |
| F1617092 | / | / | / | / | 0.014 | 0.014 | / | / | 0.032 | 0.032 | 0.046 |
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