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

Caspofungin Impurity 16 chemical structure

Caspofungin Impurity 16

CAS: 1404083-47-1
Formula: C₅₂H₈₆N₁₀O₁₆
MW: 1107.3 g/mol

VQ-047704

Reference Standard

Caspofungin Impurity A chemical structure

Caspofungin Impurity A

CAS: 1202167-57-4
Formula: C₅₁H₈₆N₁₀O₁₅
MW: 1079.3 g/mol

VQ-022046

Reference Standard

Caspofungin Impurity C chemical structure

Caspofungin Impurity C

CAS: 251095-73-5
Formula: C₅₂H₈₈N₁₀O₁₅
MW: 1093.3 g/mol

VQ-022047

Reference Standard

Caspofungin Pneumocandin B0 Impurity chemical structure

Caspofungin Pneumocandin B0 Impurity

CAS: 135575-42-7
Formula: C₅₀H₈₀N₈O₁₇
MW: 1065.2 g/mol

VQ-036178

Reference Standard

Caspofungin Pneumocandin C0 Impurity chemical structure

Caspofungin Pneumocandin C0 Impurity

CAS: 144074-96-4
Formula: C₅₀H₈₀N₈O₁₇
MW: 1065.2 g/mol

VQ-029675

Reference Standard

Casticin chemical structure

CAS: 479-91-4
Formula: C₁₉H₁₈O₈
MW: 374.3 g/mol

VQ-040598

Reference Standard

Catharanthine chemical structure

CAS: 2468-21-5
Formula: C₂₁H₂₄N₂O₂
MW: 336.4 g/mol

VQ-023418

Reference Standard

Catharanthine Tartrate chemical structure

Catharanthine Tartrate

CAS: 4168-17-6
Formula: C₄₆H₅₄N₄O₁₀
MW: 822.9 g/mol

VQ-042913

Reference Standard

Cathinone hydrochloride chemical structure

Cathinone hydrochloride

CAS: 72739-14-1
Formula: C₉H₁₂ClNO
MW: 185.65 g/mol

VQ-045138

Reference Standard

CBA-1 Impurity Precursor At DEM-3 Stage

CBA-1 Impurity Precursor At DEM-3 Stage

Formula: C₂₃H₂₁ClN₆O₂
MW: 448.9 g/mol

In stock

Reference Standard

CBA-1 Impurity Precursor At DEM-4 Stage

CBA-1 Impurity Precursor At DEM-4 Stage

Formula: C₃₇H₄₁N₉O₄
MW: 675.78 g/mol

VQ-004620

Reference Standard

CBA-1 Nitrasoamine Impurity chemical structure

CBA-1 Nitrasoamine Impurity

Formula: C₁₀H₁₃N₃O₃
MW: 223.23 g/mol

In stock

Reference Standard

CBT-1A-Cabazitaxel Impurity chemical structure

CBT-1A-Cabazitaxel Impurity

CAS: 183133-94-0
Formula: C₃₁H₄₀O₁₀
MW: 572.6 g/mol

In stock

Reference Standard

CBT-2A-Cabazitaxel Impurity chemical structure

CBT-2A-Cabazitaxel Impurity

CAS: 1373171-12-0
Formula: C₄₈H₆₁NO₁₄
MW: 876 g/mol

In stock

Reference Standard

CDP-N,N-dimethylethanolamine chemical structure

CDP-N,N-dimethylethanolamine

CAS: 3416-25-9
Formula: C₁₃H₂₄N₄O₁₁P₂
MW: 474.3 g/mol

VQ-022204

Reference Standard

Cebranopadol chemical structure

CAS: 863513-91-1
Formula: C₂₄H₂₇FN₂O
MW: 378.5 g/mol

VQ-024827

Reference Standard

Cedazuridine chemical structure

CAS: 1141397-80-9
Formula: C₉H₁₄F₂N₂O₅
MW: 268.21 g/mol

VQ-028939

Reference Standard

Cediranib chemical structure

CAS: 288383-20-0
Formula: C₂₅H₂₇FN₄O₃
MW: 450.5 g/mol

VQ-043099

Reference Standard

Cefacetrile chemical structure

CAS: 10206-21-0
Formula: C₁₃H₁₃N₃O₆S
MW: 339.33 g/mol

VQ-024828

Reference Standard

Cefaclor chemical structure

CAS: 53994-73-3
Formula: C₁₅H₁₄ClN₃O₄S
MW: 367.8 g/mol

VQ-029676

Reference Standard

Cefaclor - Impurity C chemical structure

Cefaclor - Impurity C

CAS: 143059-69-2
Formula: C₁₅H₁₄ClN₃O₄S
MW: 367.8 g/mol

VQ-022050

Reference Standard

Cefaclor Dimer chemical structure

CAS: 142975-51-7
Formula: C₃₀H₂₆Cl₂N₆O₇S₂
MW: 717.6 g/mol

VQ-024829

Reference Standard

Cefaclor EP Impurity B chemical structure

Cefaclor EP Impurity B

CAS: 53994-69-7
Formula: C₇H₇ClN₂O₃S
MW: 234.66 g/mol

VQ-021082

Reference Standard

Cefaclor EP Impurity D chemical structure

Cefaclor EP Impurity D

CAS: 152575-13-8
Formula: C₁₅H₁₄ClN₃O₄S
MW: 367.8 g/mol

VQ-022049

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