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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

Violaxanthin chemical structure

CAS: 126-29-4
Formula: C₄₀H₅₆O₄
MW: 600.9 g/mol

VQ-042915

Reference Standard

Virginiamycin chemical structure

CAS: 11006-76-1
Formula: C₇₁H₈₄N₁₀O₁₇
MW: 1349.5 g/mol

VQ-034649

Reference Standard

Virginiamycin M1 chemical structure

Virginiamycin M1

CAS: 21411-53-0
Formula: C₂₈H₃₅N₃O₇
MW: 525.6 g/mol

VQ-034650

Reference Standard

Virginiamycin S1 chemical structure

Virginiamycin S1

CAS: 23152-29-6
Formula: C₄₃H₄₉N₇O₁₀
MW: 823.9 g/mol

VQ-042916

Reference Standard

Vismodegib chemical structure

CAS: 879085-55-9
Formula: C₁₉H₁₄Cl₂N₂O₃S
MW: 421.3 g/mol

In stock

Reference Standard

Vismodegib Impurity 28 chemical structure

Vismodegib Impurity 28

CAS: 2117637-61-1
Formula: C₁₉H₁₅ClN₂O₃S
MW: 386.9 g/mol

VQ-021362

Reference Standard

Vismodegib Impurity 5 chemical structure

Vismodegib Impurity 5

CAS: 1977536-53-0
Formula: C₂₂H₁₄Cl₂N₄
MW: 405.3 g/mol

In stock

Reference Standard

Vismodegib Impurity 7 chemical structure

Vismodegib Impurity 7

CAS: 1977536-54-1
Formula: C₂₂H₁₆Cl₂N₄
MW: 407.3 g/mol

VQ-034653

Reference Standard

Vismodegib Impurity 8 chemical structure

Vismodegib Impurity 8

CAS: 1270416-26-6
Formula: C₁₁H₁₅ClN₂
MW: 210.7 g/mol

VQ-034654

Reference Standard

Vismodegib Impurity Stage-1

Vismodegib Impurity Stage-1

Formula: C₂₂H₁₄Cl₂N₄O
MW: 421.28 g/mol

In stock

Reference Standard

Vismodegib M3 chemical structure

CAS: 1370525-64-6
Formula: C₁₉H₁₄Cl₂N₂O₄S
MW: 437.3 g/mol

VQ-028719

Reference Standard

Vismodegib-d4 chemical structure

CAS: 1450990-33-6
Formula: C₁₉H₁₄Cl₂N₂O₃S
MW: 425.3 g/mol

VQ-042918

Reference Standard

Vitamin A EP Impurity C chemical structure

Vitamin A EP Impurity C

CAS: 16729-22-9
Formula: C₂₀H₃₀O
MW: 286.5 g/mol

VQ-028726

Reference Standard

Vitamin A Palmitate chemical structure

Vitamin A Palmitate

CAS: 79-81-2
Formula: C₃₆H₆₀O₂
MW: 524.9 g/mol

VQ-027782

Reference Standard

Vitamin A Propionate chemical structure

Vitamin A Propionate

CAS: 7069-42-3
Formula: C₂₃H₃₄O₂
MW: 342.5 g/mol

VQ-033509

Reference Standard

Vitamin A2 chemical structure

CAS: 79-80-1
Formula: C₂₀H₂₈O
MW: 284.4 g/mol

VQ-042919

Reference Standard

Vitamin B1 Monophosphate Chloride

Vitamin B1 Monophosphate Chloride

CAS: 532-40-1
Formula: C₁₂H₁₈N₄O₄PS : Cl
MW: 380.79 g/mol

VQ-034193

Reference Standard

Vitamin D3 Decanoate chemical structure

Vitamin D3 Decanoate

CAS: 158180-04-2
Formula: C₃₇H₆₂O₂
MW: 538.9 g/mol

VQ-024951

Reference Standard

Vitamin D3 Impurity 3 chemical structure

Vitamin D3 Impurity 3

CAS: 125521-02-0
Formula: C₂₇H₄₂O
MW: 382.6 g/mol

VQ-047771

Reference Standard

Vitamin D3 Octanoate chemical structure

Vitamin D3 Octanoate

CAS: 927822-16-0
Formula: C₃₅H₅₈O₂
MW: 510.8 g/mol

VQ-029770

Reference Standard

Vitamin D4 chemical structure

CAS: 511-28-4
Formula: C₂₈H₄₆O
MW: 398.7 g/mol

VQ-025577

Reference Standard

Vitamin E Impurity D (Mixture of Z and E isomers) chemical structure

Vitamin E Impurity D (Mixture of Z and E isomers)

CAS: 37570-32-4
Formula: C₃₁H₅₂O₃
MW: 472.7 g/mol

VQ-042922

Reference Standard

Vitamin K chemical structure

CAS: 12001-79-5
Formula: C₃₁H₄₆O₂
MW: 450.7 g/mol

VQ-042929

Reference Standard

Vitamin K1 2,3-Epoxide chemical structure

Vitamin K1 2,3-Epoxide

CAS: 1588773-08-3
Formula: C₃₁H₄₆O₃
MW: 466.7 g/mol

VQ-027474

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