Article(id=1239973083273031817, tenantId=1146029695717560320, journalId=1205117023404326918, issueId=1239973077845603299, articleNumber=null, orderNo=null, doi=10.16155/j.0254-1793.2023-0831, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1703692800000, receivedDateStr=2023-12-28, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1773562220637, onlineDateStr=2026-03-15, pubDate=1730304000000, pubDateStr=2024-10-31, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1773562220637, onlineIssueDateStr=2026-03-15, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1773562220637, creator=13701087609, updateTime=1773562220637, updator=13701087609, issue=Issue{id=1239973077845603299, tenantId=1146029695717560320, journalId=1205117023404326918, year='2024', volume='44', issue='10', pageStart='1647', pageEnd='1826', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1773562219344, creator=13701087609, updateTime=1773563041495, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1239976526251356920, tenantId=1146029695717560320, journalId=1205117023404326918, issueId=1239973077845603299, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1239976526251356921, tenantId=1146029695717560320, journalId=1205117023404326918, issueId=1239973077845603299, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=1780, endPage=1788, ext={EN=ArticleExt(id=1239973083528884379, articleId=1239973083273031817, tenantId=1146029695717560320, journalId=1205117023404326918, language=EN, title=Determination of purity and ten process impurities in pregabalin API by HPLC, columnId=1206272757852074373, journalTitle=Chinese Journal of Pharmaceutical Analysis, columnName=Safety Monitoring, runingTitle=null, highlight=null, articleAbstract=
Objective: To establish an HPLC method for determination of related substances and purity in pregabalin API.
Methods: The analytical column was an Inertsil ODS-3 (150 mm×4.0 mm,3 μm),the mobile phase A was buffer (7.05 g ammonium dihydrogen phosphate and 1.45 g diammonium hydrogen phosphate dissolved in 1 000 mL water)-methanol-acetonitrile(900:80:20) and the mobile phase B was acetonitrile,the whole carried out by gradient elution at a flow rate of 0.8 mL·min-1,the detection wavelength was set at 210 nm,the column temperature was 30 ℃ and the injection volume was 50 μL.
Results: Pregabalin was separated completely from the impurities and degradation products (the resolution>2.0). The test solution was stable for at least 48 h. The LOQs of other impurities (verification was performed by using pregabalin),lactam,4-alkene pregabalin,5-alkene pregabalin,trimer,3-isobutylglutaric acid (PGB-3),3-isobutyl glutaric acid monoamide (PGB-5),R-phenethylamine,4-isobutyl-2,6-piperidinedione (PGB-5B),monoamide phenylethylamine (PGB-5C) and phenylethylamine adipate (PGB-5D) were 0.05%,0.01%,0.01%,0.03%,0.01%,0.05%,0.03%,0.01%,0.01%,0.01% and 0.01%. The linear correlation coefficients of other impurities (verification was performed by using pregabalin),lactam,4-alkene pregabalin,5-alkene pregabalin,trimer,PGB-3 and PGB-5 were all more than 0.99. The linear ranges were LOQ-150% of impurities’ specification,respectively. The average recoveries (n=9) of lactam,4-alkene pregabalin,5-alkene pregabalin,trimer,PGB-3 and PGB-5 were 100.6% (RSD=0.56%),100.2% (RSD=0.38%),100.5% (RSD=0.46%),101.1% (RSD=1.1%),100.0% (RSD=0.63%),100.0% (RSD=0.54%). The repeatability and intermediate precision completely met the requirements. The impurities contents in three batches of pregabalin API 6 months accelerate and 60 months long-term stability test completely met the requirements,respectively.
Conclusion: This method is simple,rapid,sensitive and specific to be used for the determination of related substances and purity in phenethylamine process pregabalin API.
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目的: 建立HPLC法检测苯乙胺工艺普瑞巴林原料药中的有关物质及纯度。
方法: 采用Inertsil ODS-3(150 mm×4.0 mm,3 μm)色谱柱,以缓冲液(7.05 g磷酸二氢铵和1.45 g磷酸氢二铵溶于1 000 mL水中)-甲醇-乙腈(900:80:20)为流动相A,乙腈为流动相B,进行梯度洗脱,流速0.8 mL·min-1,检测波长210 nm,柱温30 ℃,进样量50 μL。
结果: 普瑞巴林峰与各杂质及降解产物峰能够完全分离(分离度>2.0),供试品溶液在48 h内稳定性良好;其他单杂(用普瑞巴林进行验证)、内酰胺、4-烯普瑞巴林、5-烯普瑞巴林、三聚物、3-异丁基戊二酸(PGB-3)、3-异丁基戊二酸单酰胺(PGB-5)、R-苯乙胺、4-异丁基-2,6-哌啶二酮(PGB-5B)、单酰胺苯乙胺(PGB-5C)、二酸苯乙胺(PGB-5D)的定量限分别为0.05%、0.01%、0.01%、0.03%、0.01%、0.05%、0.03%、0.01%、0.01%、0.01%和0.01%;其他单杂(用普瑞巴林进行验证)、内酰胺、4-烯普瑞巴林、5-烯普瑞巴林、三聚物、PGB-3、PGB-5线性相关系数均>0.99,范围为LOQ~各杂质指标150%;内酰胺、4-烯普瑞巴林、5-烯普瑞巴林、三聚物、PGB-3、PGB-5平均回收率(n=9)分别为100.6%(RSD=0.56%)、100.2%(RSD=0.38%)、100.5%(RSD=0.46%)、101.1%(RSD=1.1%)、100.0%(RSD=0.63%)、100.0%(RSD=0.54%);重复性和中间精密度符合规定。经检测,3批普瑞巴林原料药6个月加速和60个月长期稳定性各个杂质检测结果均符合质量标准。
结论: 该方法简便快速,灵敏度高,专属性强,可用于苯乙胺工艺普瑞巴林原料药中有关物质及纯度的检测。
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29(16):1420, articleTitle=Determination of pregabalin and its related substances by high-performance liquid chromatography, refAbstract=null), Reference(id=1239977448390054776, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239973083273031817, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=[16], rfOrder=28, authorNames=ICH, journalName=null, refType=null, unstructuredReference=ICH. Impurities in New Drug Substances Q3A(R2)[S/OL]. [2023-12-28].
https://www.ich.org/page/quality-guidelines, articleTitle=null, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1239977435756810785, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239973083273031817, xref=1., ext=[AuthorCompanyExt(id=1239977435761005090, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239973083273031817, companyId=1239977435756810785, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1.College of Pharmaceutical Scinces, Shenyang Pharmaceutical University, Shenyang 110016, China), AuthorCompanyExt(id=1239977435769393699, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239973083273031817, companyId=1239977435756810785, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1.沈阳药科大学药学院,沈阳110016)]), AuthorCompany(id=1239977435865862696, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239973083273031817, xref=2., ext=[AuthorCompanyExt(id=1239977435874251304, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239973083273031817, companyId=1239977435865862696, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.Zhejiang Huahai Pharmaceuticals Co., Ltd., Linhai 317024, China), AuthorCompanyExt(id=1239977435882639913, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239973083273031817, companyId=1239977435865862696, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.浙江华海药业股份有限公司,临海317024)])], figs=[ArticleFig(id=1239977441020662491, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239973083273031817, language=EN, label=Fig.1, caption=
Schematic representation for the formation of pregabalin lactam versus degradation time, figureFileSmall=JcFMgvsm5C5Y246vzpfAgg==, figureFileBig=UKfqD16i/55cnIo9Dw6TeQ==, tableContent=null), ArticleFig(id=1239977442530611936, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239973083273031817, language=CN, label=图1, caption=
降解时间与内酰胺增长量关系图, figureFileSmall=JcFMgvsm5C5Y246vzpfAgg==, figureFileBig=UKfqD16i/55cnIo9Dw6TeQ==, tableContent=null), ArticleFig(id=1239977442698384102, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239973083273031817, language=EN, label=Fig.2, caption=
Equilibrium between the formation and hydrolysis of pregabalin and lactam under alkaline forced degradation condition, figureFileSmall=steSfIPNPBBh+24uUUPChQ==, figureFileBig=iNsMbfkN45AyNv6v0UwyNw==, tableContent=null), ArticleFig(id=1239977442786464492, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239973083273031817, language=CN, label=图2, caption=
碱性降解条件下,普瑞巴林与内酰胺的降解平衡等式图, figureFileSmall=steSfIPNPBBh+24uUUPChQ==, figureFileBig=iNsMbfkN45AyNv6v0UwyNw==, tableContent=null), ArticleFig(id=1239977442874544879, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239973083273031817, language=EN, label=Fig.3, caption=
HPLC chromatograms of blank(A),selectivity solution 1(B) and selectivity solution 2(C), figureFileSmall=8A6W4wc3xMA8dtisroqGTg==, figureFileBig=vGwhdqPnuxXvImi0kKR0+g==, tableContent=null), ArticleFig(id=1239977442962625267, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239973083273031817, language=CN, label=图3, caption=
空白溶液(A)、选择性溶液1(B)和选择性溶液2(C)色谱图1. 4-烯普瑞巴林(4-alkene pregabalin) 2. 5-烯普瑞巴林(5-alkene pregabalin) 3.普瑞巴林(pregabalin) 4.R-苯乙胺(R-phenethylamine)5.PGB-3 6.PGB-5 7.内酰胺(lactam) 8.三聚物(峰1&峰2)[trimer(peak 1 & peak 2)] 9.PGB-5D 10.PGB-5B 11.PGB-5C
, figureFileSmall=8A6W4wc3xMA8dtisroqGTg==, figureFileBig=vGwhdqPnuxXvImi0kKR0+g==, tableContent=null), ArticleFig(id=1239977443088454391, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239973083273031817, language=EN, label=Tab.1, caption=
Main substances in pregabalin API (phenethylamine process)
, figureFileSmall=null, figureFileBig=null, tableContent=
序号 (No.) | 化合物 (compound) | 分子式 (molecular formula) | 结构 (chemical structure) | 类型 (type) |
|---|
| 1 | 普瑞巴林(pregabalin) | C8H17NO2 |  | 活性成分(active ingredient) |
| 2 | 内酰胺(lactam) | C8H15NO |  | 降解杂质(degradation impurity) |
| 3 | 4-烯普瑞巴林(4-alkene pregabalin) | C8H15NO2 |  | 工艺杂质(process impurity) |
| 4 | 5-烯普瑞巴林(5-alkene pregabalin) | C8H15NO2 |  | 工艺杂质(process impurity) |
| 5 | 三聚物(trimer) | C24H42N2O4 |  | 工艺杂质(process impurity) |
| 6 | PGB-3 | C9H16O4 |  | 工艺杂质(process impurity) |
| 7 | PGB-5 | C9H17NO3 |  | 中间体(intermediate product) |
| 8 | R-苯乙胺(R-phenethy lamine) | C8H11N |  | 拆分剂(resolving agent) |
| 9 | PGB-5B | C9H15NO2 |  | 工艺杂质(process impurity) |
| 10 | PGB-5C | C17H26N2O2 |  | 工艺杂质(process impurity) |
| 11 | PGB-5D | C17H25NO3 |  | 工艺杂质(process impurity) |
| 12 | R-普瑞巴林(R-pregabalin) | C8H17NO2 |  | 工艺杂质/对映异构体(process impurity,enantiomer) |
), ArticleFig(id=1239977443239449339, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239973083273031817, language=CN, label=表1, caption=
普瑞巴林原料药(苯乙胺工艺)主要物质信息
, figureFileSmall=null, figureFileBig=null, tableContent=
序号 (No.) | 化合物 (compound) | 分子式 (molecular formula) | 结构 (chemical structure) | 类型 (type) |
|---|
| 1 | 普瑞巴林(pregabalin) | C8H17NO2 |  | 活性成分(active ingredient) |
| 2 | 内酰胺(lactam) | C8H15NO |  | 降解杂质(degradation impurity) |
| 3 | 4-烯普瑞巴林(4-alkene pregabalin) | C8H15NO2 |  | 工艺杂质(process impurity) |
| 4 | 5-烯普瑞巴林(5-alkene pregabalin) | C8H15NO2 |  | 工艺杂质(process impurity) |
| 5 | 三聚物(trimer) | C24H42N2O4 |  | 工艺杂质(process impurity) |
| 6 | PGB-3 | C9H16O4 |  | 工艺杂质(process impurity) |
| 7 | PGB-5 | C9H17NO3 |  | 中间体(intermediate product) |
| 8 | R-苯乙胺(R-phenethy lamine) | C8H11N |  | 拆分剂(resolving agent) |
| 9 | PGB-5B | C9H15NO2 |  | 工艺杂质(process impurity) |
| 10 | PGB-5C | C17H26N2O2 |  | 工艺杂质(process impurity) |
| 11 | PGB-5D | C17H25NO3 |  | 工艺杂质(process impurity) |
| 12 | R-普瑞巴林(R-pregabalin) | C8H17NO2 |  | 工艺杂质/对映异构体(process impurity,enantiomer) |
), ArticleFig(id=1239977443327529726, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239973083273031817, language=EN, label=Tab.2, caption=
Gradient elution program
, figureFileSmall=null, figureFileBig=null, tableContent=
时间 (time)/min | 流动相比例(ratio of mobile phase)/% |
|---|
| 流动相(mobile phase)A | 流动相(mobile phase)B |
|---|
| 0~9 | 100 | 0 |
| 9~27 | 100→20 | 0→80 |
| 27~27.1 | 20→100 | 80→0 |
| 27.1~37 | 100 | 0 |
), ArticleFig(id=1239977443449164545, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239973083273031817, language=CN, label=表2, caption=
梯度洗脱程序
, figureFileSmall=null, figureFileBig=null, tableContent=
时间 (time)/min | 流动相比例(ratio of mobile phase)/% |
|---|
| 流动相(mobile phase)A | 流动相(mobile phase)B |
|---|
| 0~9 | 100 | 0 |
| 9~27 | 100→20 | 0→80 |
| 27~27.1 | 20→100 | 80→0 |
| 27.1~37 | 100 | 0 |
), ArticleFig(id=1239977443570799364, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239973083273031817, language=EN, label=Tab.3, caption=
Limit of quantitation and limit of detection
, figureFileSmall=null, figureFileBig=null, tableContent=
| 化合物(compound) | LOQ/% | LOD/% |
|---|
| 普瑞巴林(pregabalin) | 0.05 | 0.02 |
| 内酰胺(lactam) | 0.01 | 0.003 |
| 4-烯普瑞巴林(4-alkene pregabalin) | 0.01 | 0.003 |
| 5-烯普瑞巴林(5-alkene pregabalin) | 0.03 | 0.01 |
| 三聚物(trimer) | 0.01 | 0.003 |
| PGB-3 | 0.05 | 0.02 |
| PGB-5 | 0.03 | 0.01 |
| R-苯乙胺(R-phenethylamine) | 0.01 | 0.003 |
| PGB-5B | 0.01 | 0.003 |
| PGB-5C | 0.01 | 0.003 |
| PGB-5D | 0.01 | 0.003 |
), ArticleFig(id=1239977443658879751, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239973083273031817, language=CN, label=表3, caption=
普瑞巴林及各杂质定量限和检测限结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 化合物(compound) | LOQ/% | LOD/% |
|---|
| 普瑞巴林(pregabalin) | 0.05 | 0.02 |
| 内酰胺(lactam) | 0.01 | 0.003 |
| 4-烯普瑞巴林(4-alkene pregabalin) | 0.01 | 0.003 |
| 5-烯普瑞巴林(5-alkene pregabalin) | 0.03 | 0.01 |
| 三聚物(trimer) | 0.01 | 0.003 |
| PGB-3 | 0.05 | 0.02 |
| PGB-5 | 0.03 | 0.01 |
| R-苯乙胺(R-phenethylamine) | 0.01 | 0.003 |
| PGB-5B | 0.01 | 0.003 |
| PGB-5C | 0.01 | 0.003 |
| PGB-5D | 0.01 | 0.003 |
), ArticleFig(id=1239977443776320270, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239973083273031817, language=EN, label=Tab.4, caption=
The regression equations,correlation coefficients and linear ranges of pregabalin,lactam,4-alkene pregabalin, 5-alkene pregabalin,trimer,PGB-3 and PGB-5
, figureFileSmall=null, figureFileBig=null, tableContent=
化合物 (compound) | 回归方程 (regression equation) | r | 线性范围 (linear range)/(μg·mL-1) |
|---|
| 普瑞巴林(pregabalin) | Y=1 361.628 0X+248.010 0 | 0.999 6 | 4.97~14.90 |
| 内酰胺(lactam) | Y=26 843.755 8X+9 166.655 3 | 0.999 3 | 0.93~22.61 |
| 4-烯普瑞巴林(4-alkene pregabalin) | Y=28 370.102 2X+8 240.565 9 | 0.999 2 | 1.00~14.95 |
| 5-烯普瑞巴林(5-alkene pregabalin) | Y=8 685.004 0X+3 101.093 8 | 0.998 9 | 2.91~14.57 |
| 三聚物(trimer) | Y=68 284.459 5X+13 111.218 5 | 0.998 7 | 0.88~13.24 |
| PGB-3 | Y=2 893.047 2X+500.760 6 | 0.999 5 | 4.88~14.64 |
| PGB-5 | Y=4 599.677 1X+3 152.355 5 | 0.998 8 | 2.95~14.75 |
), ArticleFig(id=1239977443897955090, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239973083273031817, language=CN, label=表4, caption=
普瑞巴林、内酰胺、4-烯普瑞巴林、5-烯普瑞巴林、三聚物、PGB-3和PGB-5的线性考察
, figureFileSmall=null, figureFileBig=null, tableContent=
化合物 (compound) | 回归方程 (regression equation) | r | 线性范围 (linear range)/(μg·mL-1) |
|---|
| 普瑞巴林(pregabalin) | Y=1 361.628 0X+248.010 0 | 0.999 6 | 4.97~14.90 |
| 内酰胺(lactam) | Y=26 843.755 8X+9 166.655 3 | 0.999 3 | 0.93~22.61 |
| 4-烯普瑞巴林(4-alkene pregabalin) | Y=28 370.102 2X+8 240.565 9 | 0.999 2 | 1.00~14.95 |
| 5-烯普瑞巴林(5-alkene pregabalin) | Y=8 685.004 0X+3 101.093 8 | 0.998 9 | 2.91~14.57 |
| 三聚物(trimer) | Y=68 284.459 5X+13 111.218 5 | 0.998 7 | 0.88~13.24 |
| PGB-3 | Y=2 893.047 2X+500.760 6 | 0.999 5 | 4.88~14.64 |
| PGB-5 | Y=4 599.677 1X+3 152.355 5 | 0.998 8 | 2.95~14.75 |
), ArticleFig(id=1239977444141224730, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239973083273031817, language=EN, label=Tab.5, caption=
The result of tests for stability
, figureFileSmall=null, figureFileBig=null, tableContent=
化合物 (compound) | 杂质含量(impurities content)/% |
|---|
| D5248-17-086 | D5248-17-087 | D5248-17-088 |
|---|
| 0 d | 加速6月 (6 months accelerate) | 长期60月 (60 months long -term) | 0 d | 加速6月 (6 months accelerate) | 长期60月 (60 months long -term) | 0 d | 加速6月 (6 months accelerate) | 长期60月 (60 months long -term) |
|---|
| 内酰胺(lactam) | <LOQ | <LOQ | <LOD | <LOQ | <LOQ | <LOD | <LOD | <LOQ | <LOD |
| 4-烯普瑞巴林(4-alkene pregabalin) | <LOQ | 0.01% | <LOQ | <LOQ | 0.01% | <LOQ | <LOQ | 0.01% | <LOQ |
| 5-烯普瑞巴林(5-alkene pregabalin) | <LOQ | <LOQ | <LOQ | <LOQ | <LOQ | <LOQ | <LOQ | <LOQ | <LOQ |
| 三聚物(trimer) | <LOD | <LOD | <LOD | 0.01% | 0.01% | <LOQ | <LOQ | <LOD | <LOD |
| PGB-3 | <LOD | <LOD | <LOD | <LOD | <LOD | <LOD | <LOD | <LOD | <LOD |
| PGB-5 | <LOD | <LOD | <LOD | <LOD | <LOD | <LOD | <LOD | <LOD | <LOD |
| 其他单杂(other impurities) | <LOD | <LOQ | <LOD | <LOD | <LOQ | <LOD | <LOD | <LOD | <LOD |
| 总杂(total impurities) | <LOQ | 0.01% | <LOQ | 0.01% | 0.02% | <LOQ | <LOQ | 0.01% | <LOQ |
), ArticleFig(id=1239977444262859548, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239973083273031817, language=CN, label=表5, caption=
稳定性试验结果
, figureFileSmall=null, figureFileBig=null, tableContent=
化合物 (compound) | 杂质含量(impurities content)/% |
|---|
| D5248-17-086 | D5248-17-087 | D5248-17-088 |
|---|
| 0 d | 加速6月 (6 months accelerate) | 长期60月 (60 months long -term) | 0 d | 加速6月 (6 months accelerate) | 长期60月 (60 months long -term) | 0 d | 加速6月 (6 months accelerate) | 长期60月 (60 months long -term) |
|---|
| 内酰胺(lactam) | <LOQ | <LOQ | <LOD | <LOQ | <LOQ | <LOD | <LOD | <LOQ | <LOD |
| 4-烯普瑞巴林(4-alkene pregabalin) | <LOQ | 0.01% | <LOQ | <LOQ | 0.01% | <LOQ | <LOQ | 0.01% | <LOQ |
| 5-烯普瑞巴林(5-alkene pregabalin) | <LOQ | <LOQ | <LOQ | <LOQ | <LOQ | <LOQ | <LOQ | <LOQ | <LOQ |
| 三聚物(trimer) | <LOD | <LOD | <LOD | 0.01% | 0.01% | <LOQ | <LOQ | <LOD | <LOD |
| PGB-3 | <LOD | <LOD | <LOD | <LOD | <LOD | <LOD | <LOD | <LOD | <LOD |
| PGB-5 | <LOD | <LOD | <LOD | <LOD | <LOD | <LOD | <LOD | <LOD | <LOD |
| 其他单杂(other impurities) | <LOD | <LOQ | <LOD | <LOD | <LOQ | <LOD | <LOD | <LOD | <LOD |
| 总杂(total impurities) | <LOQ | 0.01% | <LOQ | 0.01% | 0.02% | <LOQ | <LOQ | 0.01% | <LOQ |
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