Skip to content

Product division

Impurities & Reference Standards

Pharmacopoeial and non-pharmacopoeial impurities, metabolites, nitrosamines and working standards with characterisation data for QC and regulatory work.

28,554products

6sub-categories

2,746in stock

COA + SDSwith every lot

API Impurities 14,252 Pharmacopeial Impurities (EP / USP / BP) 4,401 Nitrosamine Impurities 650 Stable Isotope Labelled Standards (Deuterated, 13C, 15N) 1,612 Metabolites & Degradation Products 4,146 API Reference Standards 3,493

Reference Standard

Cefdinir Glyoxalic Analog chemical structure

Cefdinir Glyoxalic Analog

CAS: 79350-14-4
Formula: C₁₄H₁₂N₄O₅S₂
MW: 380.4 g/mol

VQ-021089

Reference Standard

Cefdinir Impurity 2

Cefdinir Impurity 2

CAS: 2098315-12-7
Formula: C₉H₁₄N₄O₄S
MW: 274.3 g/mol

VQ-036193

Reference Standard

Cefdinir Isoxazole Analogue chemical structure

Cefdinir Isoxazole Analogue

CAS: 1356842-10-8
Formula: C₁₃H₁₁N₃O₆S
MW: 337.31 g/mol

VQ-022074

Reference Standard

Cefdinir Lactone chemical structure

Cefdinir Lactone

CAS: 946573-41-7
Formula: C₁₄H₁₃N₅O₅S₂
MW: 395.4 g/mol

VQ-022072

Reference Standard

Cefdinir Related Compound A chemical structure

Cefdinir Related Compound A

CAS: 178422-42-9
Formula: C₁₄H₁₅N₅O₆S₂
MW: 413.4 g/mol

VQ-024843

Reference Standard

Cefdinir Sulfoxide chemical structure

Cefdinir Sulfoxide

CAS: 934986-48-8
Formula: C₁₄H₁₃N₅O₆S₂
MW: 411.4 g/mol

VQ-021088

Reference Standard

Cefdinir Thiazine Analog chemical structure

Cefdinir Thiazine Analog

CAS: 178422-39-4
Formula: C₁₄H₁₅N₅O₆S₂
MW: 413.4 g/mol

VQ-021091

Reference Standard

Cefditoren chemical structure

CAS: 104145-95-1
Formula: C₁₉H₁₈N₆O₅S₃
MW: 506.6 g/mol

VQ-036194

Reference Standard

Cefditoren Methoxy Methyl chemical structure

Cefditoren Methoxy Methyl

CAS: 2762536-15-0
Formula: C₂₇H₃₂N₆O₈S₃
MW: 664.8 g/mol

VQ-024846

Reference Standard

Cefditoren open ring dimer chemical structure

Cefditoren open ring dimer

CAS: 2410655-60-4
Formula: C₅₀H₅₆N₁₂O₁₄S₆
MW: 1241.5 g/mol

VQ-036196

Reference Standard

Cefditoren Pivoxil chemical structure

Cefditoren Pivoxil

CAS: 117467-28-4
Formula: C₂₅H₂₈N₆O₇S₃
MW: 620.7 g/mol

VQ-022076

Reference Standard

Cefditoren Pivoxil Dimer chemical structure

Cefditoren Pivoxil Dimer

CAS: 878002-85-8
Formula: C₅₁H₅₆N₁₂O₁₄S₆
MW: 1253.5 g/mol

VQ-034808

Reference Standard

Cefepime chemical structure

CAS: 88040-23-7
Formula: C₁₉H₂₄N₆O₅S₂
MW: 480.6 g/mol

VQ-024848

Reference Standard

Cefepime - Impurity C chemical structure

Cefepime - Impurity C

CAS: 104301-63-5
Formula: C₈H₁₀N₄O₃S
MW: 242.26 g/mol

VQ-022078

Reference Standard

Cefepime Declatam Lactone Decarboxylate chemical structure

Cefepime Declatam Lactone Decarboxylate

CAS: 130468-09-6
Formula: C₁₃H₁₅N₅O₄S₂
MW: 369.4 g/mol

VQ-022081

Reference Standard

Cefepime EP Impurity A chemical structure

Cefepime EP Impurity A

CAS: 97164-57-3
Formula: C₁₉H₂₄N₆O₅S₂
MW: 480.6 g/mol

VQ-020694

Reference Standard

Cefepime EP Impurity B chemical structure

Cefepime EP Impurity B

CAS: 2923899-40-3
Formula: C₂₅H₂₉N₉O₇S₃
MW: 663.8 g/mol

VQ-022080

Reference Standard

Cefepime EP Impurity D chemical structure

Cefepime EP Impurity D

CAS: 65872-41-5
Formula: C₆H₇N₃O₃S
MW: 201.21 g/mol

VQ-021093

Reference Standard

Cefepime EP Impurity E chemical structure

Cefepime EP Impurity E

CAS: 103121-85-3
Formula: C₁₃H₂₀ClN₃O₃S
MW: 333.84 g/mol

VQ-022079

Reference Standard

Cefepime EP Impurity E chemical structure

Cefepime EP Impurity E

CAS: 103296-32-8
Formula: C₁₃H₁₉N₃O₃S
MW: 297.38 g/mol

VQ-043102

Reference Standard

Cefepime Hydrochloride chemical structure

Cefepime Hydrochloride

CAS: 107648-80-6
Formula: C₁₉H₂₆Cl₂N₆O₅S₂
MW: 553.5 g/mol

VQ-044661

Reference Standard

Cefepime Sulfoxide

Cefepime Sulfoxide

CAS: 112258-91-0
Formula: C₁₉H₂₄N₆O₆S₂
MW: 496.56 g/mol

VQ-024849

Reference Standard

Cefepime-d8 Sulfate chemical structure

Cefepime-d8 Sulfate

CAS: 131857-33-5
Formula: C₁₉H₂₆N₆O₉S₃
MW: 586.7 g/mol

VQ-043389

Reference Standard

Cefetamet Pivoxil chemical structure

Cefetamet Pivoxil

CAS: 65243-33-6
Formula: C₂₀H₂₅N₅O₇S₂
MW: 511.6 g/mol

VQ-029690

Need a price, a spec or a custom compound?

Send us your list — product names or CAS numbers, grade, quantity and destination. Our team replies with a formal quotation, COA and lead time.

Request a quote Contact sales