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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

Isoconazole Nitrate chemical structure

Isoconazole Nitrate

CAS: 24168-96-5
Formula: C₁₈H₁₅Cl₄N₃O₄
MW: 479.1 g/mol

VQ-026231

Reference Standard

Isoconazole Nitrate EP Impurity B chemical structure

Isoconazole Nitrate EP Impurity B

CAS: 1305320-62-0
Formula: C₁₅H₁₃Cl₄NO
MW: 365.1 g/mol

VQ-026233

Reference Standard

Isocycloseram chemical structure

CAS: 2061933-85-3
Formula: C₂₃H₁₉Cl₂F₄N₃O₄
MW: 548.3 g/mol

VQ-031255

Reference Standard

Isoescin IA chemical structure

CAS: 219944-39-5
Formula: C₅₅H₈₆O₂₄
MW: 1131.3 g/mol

VQ-030549

Reference Standard

Isoescin IB chemical structure

CAS: 219944-46-4
Formula: C₅₅H₈₆O₂₄
MW: 1131.3 g/mol

VQ-030547

Reference Standard

Isoflupredone chemical structure

CAS: 338-95-4
Formula: C₂₁H₂₇FO₅
MW: 378.4 g/mol

VQ-020945

Reference Standard

Isoflupredone 21-Phosphate Ester Disodium Salt chemical structure

Isoflupredone 21-Phosphate Ester Disodium Salt

CAS: 94088-00-3
Formula: C₂₁H₂₆FNa₂O₈P
MW: 502.4 g/mol

VQ-022868

Reference Standard

Isoflupredone Acetate chemical structure

Isoflupredone Acetate

CAS: 338-98-7
Formula: C₂₃H₂₉FO₆
MW: 420.5 g/mol

VQ-021243

Reference Standard

Isoflupropedone-21 phosphate chemical structure

Isoflupropedone-21 phosphate

CAS: 432-44-0
Formula: C₂₁H₂₈FO₈P
MW: 458.4 g/mol

VQ-032897

Reference Standard

Isoflurane chemical structure

CAS: 26675-46-7
Formula: C₃H₂ClF₅O
MW: 184.49 g/mol

VQ-031256

Reference Standard

Isoflurane EP Impurity A chemical structure

Isoflurane EP Impurity A

CAS: 33018-78-9
Formula: C₃H₂ClF₅O
MW: 184.49 g/mol

VQ-031259

Reference Standard

Isoflurane EP Impurity B chemical structure

Isoflurane EP Impurity B

CAS: 1885-48-9
Formula: C₃H₃F₅O
MW: 150.05 g/mol

VQ-031257

Reference Standard

Isoflurane EP Impurity C chemical structure

Isoflurane EP Impurity C

CAS: 32778-08-8
Formula: C₃HCl₂F₅O
MW: 218.93 g/mol

VQ-026234

Reference Standard

Isoflurane EP Impurity D chemical structure

Isoflurane EP Impurity D

CAS: 32778-07-7
Formula: C₃HCl₂F₅O
MW: 218.93 g/mol

VQ-026235

Reference Standard

Isoflurane EP Impurity E chemical structure

Isoflurane EP Impurity E

CAS: 32778-09-9
Formula: C₃Cl₃F₅O
MW: 253.38 g/mol

VQ-031258

Reference Standard

Isoleucine Valsartan chemical structure

Isoleucine Valsartan

CAS: 137862-78-3
Formula: C₂₅H₃₁N₅O₃
MW: 449.5 g/mol

VQ-028623

Reference Standard

Isoliquiritigenin chemical structure

Isoliquiritigenin

CAS: 961-29-5
Formula: C₁₅H₁₂O₄
MW: 256.25 g/mol

VQ-039907

Reference Standard

Isolopinavir chemical structure

CAS: 1132765-59-3
Formula: C₃₈H₅₀N₄O₅
MW: 642.8 g/mol

VQ-038116

Reference Standard

Isolosartan Azide impurity

Isolosartan Azide impurity

CAS: 2755908-50-8
Formula: C₂₂H₂₂ClN₉
MW: 447.92 g/mol

In stock

Reference Standard

Isomalathion chemical structure

CAS: 3344-12-5
Formula: C₁₀H₁₉O₆PS₂
MW: 330.4 g/mol

VQ-031712

Reference Standard

Isomalt chemical structure

CAS: 64519-82-0
Formula: C₁₂H₂₄O₁₁
MW: 344.31 g/mol

VQ-031260

Reference Standard

Isomaltitol chemical structure

CAS: 534-73-6
Formula: C₁₂H₂₄O₁₁
MW: 344.31 g/mol

VQ-032721

Reference Standard

Isomaltotriose chemical structure

CAS: 3371-50-4
Formula: C₁₈H₃₂O₁₆
MW: 504.4 g/mol

VQ-041099

Reference Standard

Isomaltulose chemical structure

CAS: 13718-94-0
Formula: C₁₂H₂₂O₁₁
MW: 342.3 g/mol

VQ-038946

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