Article(id=1239184758043898487, tenantId=1146029695717560320, journalId=1205117023404326918, issueId=1239184752507408921, articleNumber=null, orderNo=null, doi=10.16155/j.0254-1793.2024-0261, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1713456000000, receivedDateStr=2024-04-19, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1773374269256, onlineDateStr=2026-03-13, pubDate=1735574400000, pubDateStr=2024-12-31, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1773374269256, onlineIssueDateStr=2026-03-13, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1773374269256, creator=13701087609, updateTime=1773374269256, updator=13701087609, issue=Issue{id=1239184752507408921, tenantId=1146029695717560320, journalId=1205117023404326918, year='2024', volume='44', issue='12', pageStart='2011', pageEnd='2188', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1773374267937, creator=13701087609, updateTime=1773374446543, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1239185501702377864, tenantId=1146029695717560320, journalId=1205117023404326918, issueId=1239184752507408921, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1239185501702377865, tenantId=1146029695717560320, journalId=1205117023404326918, issueId=1239184752507408921, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=2095, endPage=2104, ext={EN=ArticleExt(id=1239184758308139642, articleId=1239184758043898487, tenantId=1146029695717560320, journalId=1205117023404326918, language=EN, title=Determination of related substances in nifedipine 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 the determination of related substances in nifedipine.
Methods: HPLC was adopted on a PFP column (250 mm×4.6 mm, 5 μm) with a gradient elution system of 20 mmol·L-1 potassium dihydrogen phosphate solution and methanol, the flow rate was 1.0 mL·min-1, and the column temperature was maintained at 30 ℃. The detection wavelength was set at 265 nm.
Results: The resolutions were good between the peaks of nifedipine and ten known impurities, including impurity D, 2-nitrobenzaldehyde, monoamide, hydroxy dehydro lactone, impurity C, dehydro-N-oxide, impurity A, impurity B, m-nifedipine, p-nifedi-pine. The resolutions between the known impurity peaks were not less than 1.5, the resolutions between the main peak of nifedipine and it’s front and back impurity peaks were not less than 2.0. The calibration curves of mass concentration of above known impurities were linear respectively in their concentration range of 0.000 2-0.015 mg·mL-1(r>0.999, n=7). The correlation coefficients of above known impurities were 1.000, 1.000, 1.000, 1.000, 0.999 9, 0.999 9, 0.999 9, 1.000, 0.999 9, 0.999 9, respectively. The average recovery rates of above known impurities were 93.1%(RSD=2.3%), 110.6%(RSD=1.9%), 109.2%(RSD=2.0%), 111.0%(RSD=2.1%), 108.1%(RSD=1.9%), 112.4%(RSD=1.8%), 110.8%(RSD=1.9%), 91.5%(RSD=3.1%), 98.9%(RSD=2.7%), 110.1%(RSD=2.6%), respectively. The detection limit of above known impurities was 0.000 06 mg·mL-1, the quantification limit of above known impurities was 0.000 2 mg·mL-1. The impurity determination results of the three batches of nifedipine samples showed that the content of the known impurities and the maximum single unknown impurity were less than 0.1%, the total impurities contents were less than 0.5%.
Conclusion: The method has good sensitivity and specificity, and it is suitable for the quality control of nifedipine.
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目的: 建立高效液相色谱法测定硝苯地平原料药的有关物质。
方法: 采用PFP(250 mm×4.6 mm,5 μm)色谱柱,以20 mmol·L-1磷酸二氢钾和甲醇为流动相进行梯度洗脱,流速1.0 mL·min-1,柱温30 ℃,检测波长265 nm。
结果: 硝苯地平以及杂质D、邻硝基苯甲醛、单酰胺、内酯、杂质C、去氢-N-氧化物、杂质A、杂质B、对硝苯地平和间硝苯地平10个已知杂质色谱峰之间的分离度良好,已知杂质间分离度均≥1.5,硝苯地平前后杂质峰与主峰分离度均≥2.0。以上各杂质的质量浓度在0.000 2~0.015 mg·mL-1范围内线性关系良好(r>0.999,n=7),相关系数分别为1.000、1.000、1.000、1.000、0.999 9、0.999 9、0.999 9、1.000、0.999 9、0.999 9,平均回收率(n=9)分别为93.1%(RSD=2.3%)、110.6%(RSD=1.9%)、109.2%(RSD=2.0%)、111.0%(RSD=2.1%)、108.1%(RSD=1.9%)、112.4%(RSD=1.8%)、110.8%(RSD=1.9%)、91.5%(RSD=3.1%)、98.9%(RSD=2.7%)、110.1%(RSD=2.6%),检测限为0.000 06 mg·mL-1,定量限为0.000 2 mg·mL-1。3批硝苯地平原料药样品测定结果显示,已知杂质及其他最大单个杂质的含量均<0.1%,杂质总含量<0.5%。
结论: 经方法学验证,本方法灵敏度高,专属性好,可用于硝苯地平原料药有关物质测定。
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Structures of nifedipine and its impurities, figureFileSmall=memMZI/4JR91iNwaOt0xYw==, figureFileBig=b6xXQPFlGhSoHcdBBYJ9YQ==, tableContent=null), ArticleFig(id=1239218778488230090, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239184758043898487, language=CN, label=图1, caption=
硝苯地平及其各杂质成分的化学结构式, figureFileSmall=memMZI/4JR91iNwaOt0xYw==, figureFileBig=b6xXQPFlGhSoHcdBBYJ9YQ==, tableContent=null), ArticleFig(id=1239218778593087695, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239184758043898487, language=EN, label=Fig.2, caption=
Chromatogram of system suitability, figureFileSmall=+wS+YV6BUeJSaF0wFe4WwA==, figureFileBig=lZg6CT6i6aRGjaPdO8TJpA==, tableContent=null), ArticleFig(id=1239218778777637080, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239184758043898487, language=CN, label=图2, caption=
系统适用性色谱图1.杂质D(impurity D) 2.邻硝苯基苯甲醛杂质(2-nitrobenzaldehyde impurity) 3.单酰胺杂质(monoamide impurity) 4.内酯杂质(hydroxy dehydro lactone impurity) 5.杂质C(impurity C) 6.去氢-N-氧化物杂质(dehydro -N-oxide impurity) 7.杂质A(impurity A) 8.杂质B(impurity B) 9.硝苯地平(nifedipine) 10.间硝苯地平杂质(m-nifedipine impurity) 11.对硝苯地平杂质(p-nifedipine impurity)
, figureFileSmall=+wS+YV6BUeJSaF0wFe4WwA==, figureFileBig=lZg6CT6i6aRGjaPdO8TJpA==, tableContent=null), ArticleFig(id=1239218779918487775, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239184758043898487, language=EN, label=Tab.1, caption=
The gradient elution procedure for HPLC
, figureFileSmall=null, figureFileBig=null, tableContent=
| t/min | 流动相比例(ratio of mobile phase)/% |
|---|
| A | B |
|---|
| 0 | 55 | 45 |
| 35 | 30 | 70 |
| 45 | 55 | 45 |
| 60 | 55 | 45 |
), ArticleFig(id=1239218780086259939, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239184758043898487, language=CN, label=表1, caption=
HPLC梯度洗脱程序
, figureFileSmall=null, figureFileBig=null, tableContent=
| t/min | 流动相比例(ratio of mobile phase)/% |
|---|
| A | B |
|---|
| 0 | 55 | 45 |
| 35 | 30 | 70 |
| 45 | 55 | 45 |
| 60 | 55 | 45 |
), ArticleFig(id=1239218780216283369, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239184758043898487, language=EN, label=Tab.2, caption=
Results of system suitability test
, figureFileSmall=null, figureFileBig=null, tableContent=
化合物 (compound) | tR/min | 分离度 (resolution) |
|---|
| 杂质D(impurity D) | 6.983 | 4.24 |
| 邻硝基苯甲醛杂质(2-nitrobenzaldehyde impurity) | 10.273 | 4.65 |
| 单酰胺杂质(monoamide impurity) | 14.403 | 4.31 |
| 内酯杂质(hydroxy dehydro lactone impurity) | 16.310 | 2.64 |
| 杂质C(impurity C) | 17.390 | 8.11 |
| 去氢-N-氧化物杂质(dehydro-N-oxide impurity) | 20.717 | 7.16 |
| 杂质A( impurity A) | 23.640 | 4.85 |
| 杂质B(impurity B) | 25.670 | 9.32 |
| 硝苯地平(nifedipine) | 29.770 | 7.60 |
| 间硝苯地平杂质(m-nifedipine impurity) | 33.177 | 6.85 |
| 对硝苯地平杂质(p-nifedipine impurity) | 36.197 | \ |
), ArticleFig(id=1239218780325335277, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239184758043898487, language=CN, label=表2, caption=
系统适用性试验结果
, figureFileSmall=null, figureFileBig=null, tableContent=
化合物 (compound) | tR/min | 分离度 (resolution) |
|---|
| 杂质D(impurity D) | 6.983 | 4.24 |
| 邻硝基苯甲醛杂质(2-nitrobenzaldehyde impurity) | 10.273 | 4.65 |
| 单酰胺杂质(monoamide impurity) | 14.403 | 4.31 |
| 内酯杂质(hydroxy dehydro lactone impurity) | 16.310 | 2.64 |
| 杂质C(impurity C) | 17.390 | 8.11 |
| 去氢-N-氧化物杂质(dehydro-N-oxide impurity) | 20.717 | 7.16 |
| 杂质A( impurity A) | 23.640 | 4.85 |
| 杂质B(impurity B) | 25.670 | 9.32 |
| 硝苯地平(nifedipine) | 29.770 | 7.60 |
| 间硝苯地平杂质(m-nifedipine impurity) | 33.177 | 6.85 |
| 对硝苯地平杂质(p-nifedipine impurity) | 36.197 | \ |
), ArticleFig(id=1239218780430192880, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239184758043898487, language=EN, label=Tab.3, caption=
Regression equations,linear ranges and relative correction factors
, figureFileSmall=null, figureFileBig=null, tableContent=
化合物 (compound) | 回归方程 (regression equation) | 线性范围 (linear range)/(mg·mL-1) | r | 相对校正因子 (relative correction factor) |
|---|
| 杂质D(impurity D) | Y=503.1X+0.014 9 | 0.000 2~0.015 | 1.000 | 0.28 |
| 邻硝基苯甲醛杂质(2-nitrobenzaldehyde impurity) | Y=157.8X+0.005 5 | 0.000 2~0.015 | 1.000 | 0.88 |
| 单酰胺杂质( monoamide impurity) | Y=133.7X+0.009 4 | 0.000 2~0.015 | 1.000 | 1.04 |
| 内酯杂质(hydroxy dehydro lactone impurity ) | Y=246.4X+0.019 7 | 0.000 2~0.015 | 1.000 | 0.57 |
| 杂质C(impurity C) | Y=724.8X+0.014 4 | 0.000 2~0.015 | 0.999 9 | 0.19 |
| 去氢-N-氧化物杂质(dehydro-N-oxide impurity) | Y=448.1X+0.011 5 | 0.000 2~0.015 | 0.999 9 | 0.31 |
| 杂质A(impurityA) | Y=218.2X+0.005 1 | 0.000 2~0.015 | 0.999 9 | 0.64 |
| 杂质B(impurityB) | Y=186.2X+0.010 4 | 0.000 2~0.015 | 1.000 | 0.75 |
| 硝苯地平(nifedipine) | Y=139.5X+0.004 0 | 0.000 2~0.015 | 0.999 9 | 1.00 |
| 间硝苯地平杂质(m-nifedipine impurity ) | Y=234.2X+0.006 3 | 0.000 2~0.015 | 0.999 9 | 0.60 |
| 对硝苯地平杂质(p-nifedipine impurity ) | Y=245.3X+0.006 6 | 0.000 2~0.015 | 0.999 9 | 0.57 |
), ArticleFig(id=1239218780539244791, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239184758043898487, language=CN, label=表3, caption=
回归方程、线性范围和校正因子
, figureFileSmall=null, figureFileBig=null, tableContent=
化合物 (compound) | 回归方程 (regression equation) | 线性范围 (linear range)/(mg·mL-1) | r | 相对校正因子 (relative correction factor) |
|---|
| 杂质D(impurity D) | Y=503.1X+0.014 9 | 0.000 2~0.015 | 1.000 | 0.28 |
| 邻硝基苯甲醛杂质(2-nitrobenzaldehyde impurity) | Y=157.8X+0.005 5 | 0.000 2~0.015 | 1.000 | 0.88 |
| 单酰胺杂质( monoamide impurity) | Y=133.7X+0.009 4 | 0.000 2~0.015 | 1.000 | 1.04 |
| 内酯杂质(hydroxy dehydro lactone impurity ) | Y=246.4X+0.019 7 | 0.000 2~0.015 | 1.000 | 0.57 |
| 杂质C(impurity C) | Y=724.8X+0.014 4 | 0.000 2~0.015 | 0.999 9 | 0.19 |
| 去氢-N-氧化物杂质(dehydro-N-oxide impurity) | Y=448.1X+0.011 5 | 0.000 2~0.015 | 0.999 9 | 0.31 |
| 杂质A(impurityA) | Y=218.2X+0.005 1 | 0.000 2~0.015 | 0.999 9 | 0.64 |
| 杂质B(impurityB) | Y=186.2X+0.010 4 | 0.000 2~0.015 | 1.000 | 0.75 |
| 硝苯地平(nifedipine) | Y=139.5X+0.004 0 | 0.000 2~0.015 | 0.999 9 | 1.00 |
| 间硝苯地平杂质(m-nifedipine impurity ) | Y=234.2X+0.006 3 | 0.000 2~0.015 | 0.999 9 | 0.60 |
| 对硝苯地平杂质(p-nifedipine impurity ) | Y=245.3X+0.006 6 | 0.000 2~0.015 | 0.999 9 | 0.57 |
), ArticleFig(id=1239218780623130873, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239184758043898487, language=EN, label=Tab.4, caption=
The results of recovery experiments
, figureFileSmall=null, figureFileBig=null, tableContent=
化合物 (compound) | 回收率(recovery)/% | 平均回收率 (averagerecovery)/% | RSD/% |
|---|
低浓度 (low concentration) | 中浓度 (medium concentration) | 高浓度 (high concentration) |
|---|
| 杂质D(impurity D) | 94.3 | 93.9 | 91.0 | 93.1 | 2.3 |
| 邻硝基苯甲醛杂质(2-nitrobenzaldehyde impurity ) | 110.3 | 111.9 | 109.7 | 110.6 | 1.9 |
| 单酰胺杂质(monoamide impurity ) | 107.4 | 110.4 | 109.9 | 109.2 | 2.0 |
| 内酯杂质(hydroxy dehydro lactone impurity ) | 109.2 | 112.8 | 111.0 | 111.0 | 2.1 |
| 杂质C( impurity C) | 106.7 | 109.3 | 108.2 | 108.1 | 1.9 |
| 去氢-N-氧化物杂质(dehydro-N-oxide impurity) | 111.1 | 113.9 | 112.3 | 112.4 | 1.8 |
| 杂质A( impurity A) | 109.8 | 112.4 | 110.2 | 110.8 | 1.9 |
| 杂质B(impurity B) | 89.8 | 90.3 | 94.4 | 91.5 | 3.1 |
| 间硝苯地平杂质(m-nifedipine impurity ) | 97.5 | 100.9 | 98.2 | 98.9 | 2.7 |
| 对硝苯地平杂质(p-nifedipine impurity ) | 108.2 | 111.2 | 112.5 | 110.6 | 2.6 |
), ArticleFig(id=1239218780769931518, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239184758043898487, language=CN, label=表4, caption=
回收率试验结果(n=9)
, figureFileSmall=null, figureFileBig=null, tableContent=
化合物 (compound) | 回收率(recovery)/% | 平均回收率 (averagerecovery)/% | RSD/% |
|---|
低浓度 (low concentration) | 中浓度 (medium concentration) | 高浓度 (high concentration) |
|---|
| 杂质D(impurity D) | 94.3 | 93.9 | 91.0 | 93.1 | 2.3 |
| 邻硝基苯甲醛杂质(2-nitrobenzaldehyde impurity ) | 110.3 | 111.9 | 109.7 | 110.6 | 1.9 |
| 单酰胺杂质(monoamide impurity ) | 107.4 | 110.4 | 109.9 | 109.2 | 2.0 |
| 内酯杂质(hydroxy dehydro lactone impurity ) | 109.2 | 112.8 | 111.0 | 111.0 | 2.1 |
| 杂质C( impurity C) | 106.7 | 109.3 | 108.2 | 108.1 | 1.9 |
| 去氢-N-氧化物杂质(dehydro-N-oxide impurity) | 111.1 | 113.9 | 112.3 | 112.4 | 1.8 |
| 杂质A( impurity A) | 109.8 | 112.4 | 110.2 | 110.8 | 1.9 |
| 杂质B(impurity B) | 89.8 | 90.3 | 94.4 | 91.5 | 3.1 |
| 间硝苯地平杂质(m-nifedipine impurity ) | 97.5 | 100.9 | 98.2 | 98.9 | 2.7 |
| 对硝苯地平杂质(p-nifedipine impurity ) | 108.2 | 111.2 | 112.5 | 110.6 | 2.6 |
), ArticleFig(id=1239218780887372032, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239184758043898487, language=EN, label=Tab.5, caption=
Results of stability investigation
, figureFileSmall=null, figureFileBig=null, tableContent=
| t/h | 主峰面积 (principal peak area) | 杂质含量(impurity content)/% | 杂质数 (number of impurity) |
|---|
单酰胺 (monoamide) | 间硝苯地平 (m-nifedipine) | 其他定性杂质 (other impurity) | 最大未知杂质 (maximum unknown impurity) | 总杂质 (total impurity) |
|---|
| 0 | 285.490 | 0.02 | 0.04 | - | 0.06 | 0.18 | 6 |
| 6 | 283.660 | 0.02 | 0.04 | - | 0.06 | 0.16 | 6 |
| 12 | 284.105 | 0.02 | 0.04 | - | 0.06 | 0.18 | 6 |
| 18 | 284.022 | 0.02 | 0.04 | - | 0.06 | 0.16 | 6 |
| 24 | 283.553 | 0.02 | 0.04 | - | 0.06 | 0.16 | 6 |
| 36 | 283.770 | 0.02 | 0.02 | - | 0.07 | 0.14 | 6 |
| 平均值(mean) | 284.101 | 0.02 | 0.04 | - | 0.06 | 0.16 | - |
| RSD/% | 0.25 | 0.00 | 0.22 | - | 0.07 | 0.09 | - |
), ArticleFig(id=1239218781004812550, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239184758043898487, language=CN, label=表5, caption=
稳定性试验结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| t/h | 主峰面积 (principal peak area) | 杂质含量(impurity content)/% | 杂质数 (number of impurity) |
|---|
单酰胺 (monoamide) | 间硝苯地平 (m-nifedipine) | 其他定性杂质 (other impurity) | 最大未知杂质 (maximum unknown impurity) | 总杂质 (total impurity) |
|---|
| 0 | 285.490 | 0.02 | 0.04 | - | 0.06 | 0.18 | 6 |
| 6 | 283.660 | 0.02 | 0.04 | - | 0.06 | 0.16 | 6 |
| 12 | 284.105 | 0.02 | 0.04 | - | 0.06 | 0.18 | 6 |
| 18 | 284.022 | 0.02 | 0.04 | - | 0.06 | 0.16 | 6 |
| 24 | 283.553 | 0.02 | 0.04 | - | 0.06 | 0.16 | 6 |
| 36 | 283.770 | 0.02 | 0.02 | - | 0.07 | 0.14 | 6 |
| 平均值(mean) | 284.101 | 0.02 | 0.04 | - | 0.06 | 0.16 | - |
| RSD/% | 0.25 | 0.00 | 0.22 | - | 0.07 | 0.09 | - |
), ArticleFig(id=1239218781101281546, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239184758043898487, language=EN, label=Tab.6, caption=
Results of robustness investigation
, figureFileSmall=null, figureFileBig=null, tableContent=
| 色谱条件 (chromatographic condition) | 含量(content)/% |
|---|
单酰胺 (monoamide) | 间硝苯地平 (m-nifedipine ) | 其他定性杂质(other impurity ) | 最大未知杂质 (maximum unknown impurity) | 总杂质 (total impurity) |
|---|
| 流速(flow rate)/(mL·min-1) | 0.95 | 0.02 | 0.03 | - | 0.05 | 0.19 |
| 1.0 | 0.02 | 0.04 | - | 0.06 | 0.21 |
| 1.05 | 0.02 | 0.03 | - | 0.05 | 0.17 |
| 柱温(column temperature)/℃ | 25 | 0.02 | 0.04 | - | 0.07 | 0.18 |
| 30 | 0.02 | 0.04 | - | 0.06 | 0.21 |
| 35 | 0.02 | 0.03 | - | 0.07 | 0.17 |
| 色谱柱(chromatographic column) | shimadzu | 0.02 | 0.04 | - | 0.05 | 0.16 |
| 月旭科技(Yuesu Science) | 0.02 | 0.04 | - | 0.06 | 0.21 |
| Waters | 0.02 | 0.04 | - | 0.05 | 0.17 |
| 检测波长(detection wavelength)/nm | 263 | 0.02 | 0.05 | - | 0.06 | 0.18 |
| 265 | 0.02 | 0.04 | - | 0.07 | 0.21 |
| 267 | 0.02 | 0.05 | - | 0.06 | 0.22 |
| 流动相比例(ratio of mobile phase)/% | A+2%∶B-2%(57∶43,32∶68,57∶43,57∶43) | 0.02 | 0.04 | - | 0.05 | 0.17 |
| A∶B(55∶45,30∶70,55∶45,55∶45) | 0.02 | 0.04 | - | 0.05 | 0.21 |
| A-2%∶B+2%(53∶47,28∶72,53∶47,53∶47) | 0.02 | 0.04 | - | 0.05 | 0.17 |
), ArticleFig(id=1239218781231304974, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239184758043898487, language=CN, label=表6, caption=
耐用性考察结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 色谱条件 (chromatographic condition) | 含量(content)/% |
|---|
单酰胺 (monoamide) | 间硝苯地平 (m-nifedipine ) | 其他定性杂质(other impurity ) | 最大未知杂质 (maximum unknown impurity) | 总杂质 (total impurity) |
|---|
| 流速(flow rate)/(mL·min-1) | 0.95 | 0.02 | 0.03 | - | 0.05 | 0.19 |
| 1.0 | 0.02 | 0.04 | - | 0.06 | 0.21 |
| 1.05 | 0.02 | 0.03 | - | 0.05 | 0.17 |
| 柱温(column temperature)/℃ | 25 | 0.02 | 0.04 | - | 0.07 | 0.18 |
| 30 | 0.02 | 0.04 | - | 0.06 | 0.21 |
| 35 | 0.02 | 0.03 | - | 0.07 | 0.17 |
| 色谱柱(chromatographic column) | shimadzu | 0.02 | 0.04 | - | 0.05 | 0.16 |
| 月旭科技(Yuesu Science) | 0.02 | 0.04 | - | 0.06 | 0.21 |
| Waters | 0.02 | 0.04 | - | 0.05 | 0.17 |
| 检测波长(detection wavelength)/nm | 263 | 0.02 | 0.05 | - | 0.06 | 0.18 |
| 265 | 0.02 | 0.04 | - | 0.07 | 0.21 |
| 267 | 0.02 | 0.05 | - | 0.06 | 0.22 |
| 流动相比例(ratio of mobile phase)/% | A+2%∶B-2%(57∶43,32∶68,57∶43,57∶43) | 0.02 | 0.04 | - | 0.05 | 0.17 |
| A∶B(55∶45,30∶70,55∶45,55∶45) | 0.02 | 0.04 | - | 0.05 | 0.21 |
| A-2%∶B+2%(53∶47,28∶72,53∶47,53∶47) | 0.02 | 0.04 | - | 0.05 | 0.17 |
), ArticleFig(id=1239218781340356882, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239184758043898487, language=EN, label=Tab.7, caption=
Mass balance data
, figureFileSmall=null, figureFileBig=null, tableContent=
试验条件 (condition of experiment) | 样品含量 (sample content)/(ng·mL-1) | 主峰面积 (principal peak area) | 杂质峰面积 (impurities peak area) | 百分比 (percentage)/% |
|---|
| 未破坏(undamaged) | 2.087 | 288.582 | 0.651 | - |
| 固体光照破坏(solid photodamage) | 2.063 | 273.136 | 17.993 | 101.0 |
| 固体高温破坏(solid high-temperature damaged) | 2.050 | 272.769 | 0.861 | 96.3 |
| 酸破坏(acidification damaged) | 2.042 | 286.909 | 0.584 | 101.6 |
| 碱破坏(alkalization damaged) | 2.032 | 260.385 | 0.504 | 92.6 |
| 氧化破坏(oxidation damaged) | 2.093 | 282.581 | 1.673 | 98.0 |
| 液体光照破坏(liqiud photodamage) | 2.087 | 273.658 | 18.862 | 101.1 |
| 液体高温破坏(liqiud high-temperature damaged) | 2.087 | 276.389 | 0.790 | 95.8 |
), ArticleFig(id=1239218781428437270, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239184758043898487, language=CN, label=表7, caption=
物料守恒试验数据
, figureFileSmall=null, figureFileBig=null, tableContent=
试验条件 (condition of experiment) | 样品含量 (sample content)/(ng·mL-1) | 主峰面积 (principal peak area) | 杂质峰面积 (impurities peak area) | 百分比 (percentage)/% |
|---|
| 未破坏(undamaged) | 2.087 | 288.582 | 0.651 | - |
| 固体光照破坏(solid photodamage) | 2.063 | 273.136 | 17.993 | 101.0 |
| 固体高温破坏(solid high-temperature damaged) | 2.050 | 272.769 | 0.861 | 96.3 |
| 酸破坏(acidification damaged) | 2.042 | 286.909 | 0.584 | 101.6 |
| 碱破坏(alkalization damaged) | 2.032 | 260.385 | 0.504 | 92.6 |
| 氧化破坏(oxidation damaged) | 2.093 | 282.581 | 1.673 | 98.0 |
| 液体光照破坏(liqiud photodamage) | 2.087 | 273.658 | 18.862 | 101.1 |
| 液体高温破坏(liqiud high-temperature damaged) | 2.087 | 276.389 | 0.790 | 95.8 |
), ArticleFig(id=1239218781541683483, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239184758043898487, language=EN, label=Tab.8, caption=
Results of sample test
, figureFileSmall=null, figureFileBig=null, tableContent=
化合物 (compound) | 指标限度 (limit) | 有关物质含量(content of related substance)/% |
|---|
| 批号(lot No.)052210001 | 批号(lot No.)052210002 | 批号(lot No.)052210003 |
|---|
| 杂质D(impurity D) | ≤0.1% | - | - | - |
| 邻硝基苯甲醛杂质(2-nitrobenzaldehyde impurity) | ≤0.1% | 0.02 | 0.02 | 0.02 |
| 单酰胺杂质monoamide impurity) | ≤0.1% | - | - | - |
| 内酯杂质(hydroxy dehydro lactone impurity) | ≤0.1% | - | - | - |
| 杂质C(nifedipine impurity C) | ≤0.1% | - | - | - |
| 去氢-N-氧化物杂质(dehydro-N-oxide impurity) | ≤0.1% | - | - | - |
| 杂质A(impurity A) | ≤0.1% | - | - | - |
| 杂质B(impurity B) | ≤0.1% | - | - | - |
| 间硝苯地平杂质(m-nifedipine impurity ) | ≤0.1% | 0.03 | 0.03 | 0.03 |
| 对硝苯地平杂质(p-nifedipine impurity ) | ≤0.1% | - | - | - |
| 其他最大未知单杂(other maximum unknown impurity) | ≤0.1% | 0.09 | 0.07 | 0.06 |
| 总杂质(total impurities) | ≤0.5% | 0.26 | 0.26 | 0.23 |
), ArticleFig(id=1239218781650735390, tenantId=1146029695717560320, journalId=1205117023404326918, articleId=1239184758043898487, language=CN, label=表8, caption=
样品检验结果
, figureFileSmall=null, figureFileBig=null, tableContent=
化合物 (compound) | 指标限度 (limit) | 有关物质含量(content of related substance)/% |
|---|
| 批号(lot No.)052210001 | 批号(lot No.)052210002 | 批号(lot No.)052210003 |
|---|
| 杂质D(impurity D) | ≤0.1% | - | - | - |
| 邻硝基苯甲醛杂质(2-nitrobenzaldehyde impurity) | ≤0.1% | 0.02 | 0.02 | 0.02 |
| 单酰胺杂质monoamide impurity) | ≤0.1% | - | - | - |
| 内酯杂质(hydroxy dehydro lactone impurity) | ≤0.1% | - | - | - |
| 杂质C(nifedipine impurity C) | ≤0.1% | - | - | - |
| 去氢-N-氧化物杂质(dehydro-N-oxide impurity) | ≤0.1% | - | - | - |
| 杂质A(impurity A) | ≤0.1% | - | - | - |
| 杂质B(impurity B) | ≤0.1% | - | - | - |
| 间硝苯地平杂质(m-nifedipine impurity ) | ≤0.1% | 0.03 | 0.03 | 0.03 |
| 对硝苯地平杂质(p-nifedipine impurity ) | ≤0.1% | - | - | - |
| 其他最大未知单杂(other maximum unknown impurity) | ≤0.1% | 0.09 | 0.07 | 0.06 |
| 总杂质(total impurities) | ≤0.5% | 0.26 | 0.26 | 0.23 |
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