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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

Diazepam EP Impurity B chemical structure

Diazepam EP Impurity B

CAS: 6021-21-2
Formula: C₁₆H₁₃Cl₂NO₂
MW: 322.2 g/mol

VQ-025282

Reference Standard

Diazepam EP Impurity C chemical structure

Diazepam EP Impurity C

CAS: 5220-02-0
Formula: C₁₆H₁₃ClN₂O
MW: 284.74 g/mol

VQ-025283

Reference Standard

Diazepam EP Impurity E chemical structure

Diazepam EP Impurity E

CAS: 20927-53-1
Formula: C₁₅H₁₁ClN₂O
MW: 270.71 g/mol

VQ-025284

Reference Standard

Diazepam EP Impurity F chemical structure

Diazepam EP Impurity F

CAS: 31269-33-7
Formula: C₁₆H₁₃ClN₂O
MW: 284.74 g/mol

VQ-025285

Reference Standard

Diazinon chemical structure

CAS: 333-41-5
Formula: C₁₂H₂₁N₂O₃PS
MW: 304.35 g/mol

VQ-025286

Reference Standard

Diazinon-D10 chemical structure

CAS: 100155-47-3
Formula: C₁₂H₂₁N₂O₃PS
MW: 314.41 g/mol

VQ-036667

Reference Standard

Diazoxide chemical structure

CAS: 364-98-7
Formula: C₈H₇ClN₂O₂S
MW: 230.67 g/mol

VQ-007421

Reference Standard

Diazoxide Benzene Sulfonamide Impurity chemical structure

Diazoxide Benzene Sulfonamide Impurity

CAS: 5790-69-2
Formula: C₆H₇ClN₂O₂S
MW: 206.65 g/mol

In stock

Reference Standard

Diazoxide Metabolite M2

Diazoxide Metabolite M2

CAS: 51264-26-7
Formula: C₈H₅ClN₂O₄S
MW: 260.65 g/mol

VQ-036668

Reference Standard

Diazoxide N-Acetyl Impurity chemical structure

Diazoxide N-Acetyl Impurity

CAS: 19185-77-4
Formula: C₈H₉ClN₂O₃S
MW: 248.69 g/mol

In stock

Reference Standard

Diazoxide Sulfonamide Urea Impurity chemical structure

Diazoxide Sulfonamide Urea Impurity

CAS: 5800-59-9
Formula: C₇H₅ClN₂O₃S
MW: 232.64 g/mol

In stock

Reference Standard

Diazoxide-d3 chemical structure

CAS: 1432063-51-8
Formula: C₈H₇ClN₂O₂S
MW: 233.69 g/mol

VQ-036669

Reference Standard

Diazoxon chemical structure

CAS: 962-58-3
Formula: C₁₂H₂₁N₂O₄P
MW: 288.28 g/mol

VQ-036665

Reference Standard

Dibaclofen Urea chemical structure

Dibaclofen Urea

CAS: 2726264-10-2
Formula: C₂₁H₂₂Cl₂N₂O₅
MW: 453.3 g/mol

VQ-024485

Reference Standard

Dibenz[a,h]anthracene chemical structure

Dibenz[a,h]anthracene

CAS: 53-70-3
Formula: C₂₂H₁₄
MW: 278.3 g/mol

VQ-038847

Reference Standard

Dibenzhydryl Disulfide chemical structure

Dibenzhydryl Disulfide

CAS: 1726-02-9
Formula: C₂₆H₂₂S₂
MW: 398.6 g/mol

VQ-043230

Reference Standard

Dibenzo[b,e]oxepine-6,11-dione chemical structure

Dibenzo[b,e]oxepine-6,11-dione

CAS: 15128-50-4
Formula: C₁₄H₈O₃
MW: 224.21 g/mol

VQ-038754

Reference Standard

Dibenzo[b,f][1,4]thiazepin-11(10H)-one, 5-oxide chemical structure

Dibenzo[b,f][1,4]thiazepin-11(10H)-one, 5-oxide

CAS: 20290-48-6
Formula: C₁₃H₉NO₂S
MW: 243.28 g/mol

VQ-027699

Reference Standard

Dibenzosuberane chemical structure

Dibenzosuberane

CAS: 833-48-7
Formula: C₁₅H₁₄
MW: 194.27 g/mol

VQ-029950

Reference Standard

Dibenzosuberenol chemical structure

Dibenzosuberenol

CAS: 10354-00-4
Formula: C₁₅H₁₂O
MW: 208.25 g/mol

VQ-025108

Reference Standard

Dibenzosuberenone chemical structure

Dibenzosuberenone

CAS: 2222-33-5
Formula: C₁₅H₁₀O
MW: 206.24 g/mol

VQ-022267

Reference Standard

Dibenzosuberone chemical structure

Dibenzosuberone

CAS: 1210-35-1
Formula: C₁₅H₁₂O
MW: 208.25 g/mol

VQ-022268

Reference Standard

Dibenzoyl Thiamine chemical structure

Dibenzoyl Thiamine

CAS: 299-88-7
Formula: C₂₆H₂₆N₄O₄S
MW: 490.6 g/mol

VQ-050290

Reference Standard

Dibenzyl Azodicarboxylate chemical structure

Dibenzyl Azodicarboxylate

CAS: 2449-05-0
Formula: C₁₆H₁₄N₂O₄
MW: 298.29 g/mol

VQ-043995

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