Category: Pharmaceutical Impurity Reference Standards

No. Molecular Structure Product Information
1 Cefazolin USP Impurity D (Cefazolin Open-ring Lactone) CAS#: 25953-19-9170112
2 Cefazolin Impurity I(EP), Impurity L(USP) CAS#: 25953-19-9170081
3 SSM2-Z5 CAS#: 1115-70-420063002
4 SM2-Z4 CAS#: 1115-70-420063001
5 Levodopa Impurity 3 CAS#: 27313-65-1
6 Levodopa Impurity 1 CAS#: 4228-66-4
7 Dextromethorphan Impurity IV(CP) CAS#: 1177494-18-6
8 Dextromethorphan Impurity C(EP) CAS#: 57969-05-8
9 Dextromethorphan Impurity B(EP) CAS#: 125-73-5
10 Methyl 3-Methoxy Crotonate CAS#: 35217-21-1
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