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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

Carbidopa Imine Ester Impurity chemical structure

Carbidopa Imine Ester Impurity

CAS: 1402053-59-1
Formula: C₁₄H₂₀N₂O₄
MW: 280.32 g/mol

VQ-029640

Reference Standard

Carbidopa Impurity 2 chemical structure

Carbidopa Impurity 2

CAS: 55175-59-2
Formula: C₁₀H₁₄N₂O₃
MW: 210.23 g/mol

VQ-047687

Reference Standard

Carbidopa Impurity 5 chemical structure

Carbidopa Impurity 5

CAS: 54737-52-9
Formula: C₁₁H₁₄O₅
MW: 226.23 g/mol

VQ-036148

Reference Standard

Carbidopa Monohydrate chemical structure

Carbidopa Monohydrate

CAS: 38821-49-7
Formula: C₁₀H₁₆N₂O₅
MW: 244.24 g/mol

VQ-007373

Reference Standard

Carbidopa WS chemical structure

CAS: 28860-95-9
Formula: C₁₀H₁₄N₂O₄
MW: 226.23 g/mol

In stock

Reference Standard

Carbimazole chemical structure

CAS: 22232-54-8
Formula: C₇H₁₀N₂O₂S
MW: 186.23 g/mol

VQ-022005

Reference Standard

Carbimazole EP Impurity A chemical structure

Carbimazole EP Impurity A

CAS: 60-56-0
Formula: C₄H₆N₂S
MW: 114.17 g/mol

VQ-021065

Reference Standard

Carbinoxamine Impurity B chemical structure

Carbinoxamine Impurity B

CAS: 14159-57-0
Formula: C₁₂H₁₁NO
MW: 185.22 g/mol

VQ-023348

Reference Standard

Carbinoxamine Maleate chemical structure

Carbinoxamine Maleate

CAS: 3505-38-2
Formula: C₂₀H₂₃ClN₂O₅
MW: 406.9 g/mol

VQ-029642

Reference Standard

Carbinoxamine N-Oxide chemical structure

Carbinoxamine N-Oxide

CAS: 1256285-70-7
Formula: C₁₆H₁₉ClN₂O₂
MW: 306.79 g/mol

VQ-021066

Reference Standard

Carbobenzoxy-D,L-tryptophanamide chemical structure

Carbobenzoxy-D,L-tryptophanamide

CAS: 27018-75-3
Formula: C₁₉H₁₉N₃O₃
MW: 337.4 g/mol

VQ-050871

Reference Standard

Carbocisteine chemical structure

CAS: 638-23-3
Formula: C₅H₉NO₄S
MW: 179.2 g/mol

VQ-022007

Reference Standard

Carbocisteine - Impurity B

Carbocisteine - Impurity B

CAS: 907565-13-3
Formula: C₇H₁₁NO₆S
MW: 237.23 g/mol

VQ-024776

Reference Standard

Carbocisteine Diethyl Ester Hydrochloride chemical structure

Carbocisteine Diethyl Ester Hydrochloride

CAS: 92282-33-2
Formula: C₉H₁₈ClNO₄S
MW: 271.76 g/mol

VQ-024778

Reference Standard

Carbocisteine Lactam chemical structure

Carbocisteine Lactam

CAS: 62305-89-9
Formula: C₅H₇NO₃S
MW: 161.18 g/mol

VQ-024775

Reference Standard

Carbocisteine Lactam Sodium Salt chemical structure

Carbocisteine Lactam Sodium Salt

CAS: 88933-48-6
Formula: C₅H₆NNaO₃S
MW: 183.16 g/mol

VQ-022008

Reference Standard

Carbocisteine Sulfoxide chemical structure

Carbocisteine Sulfoxide

CAS: 5439-87-2
Formula: C₅H₉NO₅S
MW: 195.2 g/mol

VQ-021067

Reference Standard

Carbocisteine-13C3 chemical structure

Carbocisteine-13C3

CAS: 1391068-19-1
Formula: C₅H₉NO₄S
MW: 179.2 g/mol

VQ-024779

Reference Standard

Carbodenafil chemical structure

CAS: 944241-52-5
Formula: C₂₄H₃₂N₆O₃
MW: 452.5 g/mol

VQ-035455

Reference Standard

Carbofuran chemical structure

CAS: 1563-66-2
Formula: C₁₂H₁₅NO₃
MW: 221.25 g/mol

VQ-039517

Reference Standard

Carbonic acid,(phenoxycarbonyl)azanyl phenyl ester chemical structure

Carbonic acid,(phenoxycarbonyl)azanyl phenyl ester

CAS: 141580-65-6
Formula: C₁₄H₁₁NO₅
MW: 273.24 g/mol

VQ-050043

Reference Standard

Carbonochloridic acid, octyl ester chemical structure

Carbonochloridic acid, octyl ester

CAS: 7452-59-7
Formula: C₉H₁₇ClO₂
MW: 192.68 g/mol

VQ-032445

Reference Standard

Carboplatin chemical structure

CAS: 41575-94-4
Formula: C₆H₁₂N₂O₄Pt
MW: 371.25 g/mol

VQ-024780

Reference Standard

Carboplatin Impurity 12 chemical structure

Carboplatin Impurity 12

CAS: 113287-15-3
Formula: C₆H₁₄N₂O₆Pt
MW: 405.27 g/mol

VQ-022009

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