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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

Desmethylnaproxen chemical structure

Desmethylnaproxen

CAS: 60756-73-2
Formula: C₁₃H₁₂O₃
MW: 216.23 g/mol

VQ-007147

Reference Standard

Desmopressin chemical structure

CAS: 16679-58-6
Formula: C₄₆H₆₄N₁₄O₁₂S₂
MW: 1069.2 g/mol

VQ-030136

Reference Standard

Desmopressin Acetate chemical structure

Desmopressin Acetate

CAS: 62288-83-9
Formula: C₄₈H₆₈N₁₄O₁₄S₂
MW: 1129.3 g/mol

VQ-036638

Reference Standard

Desmopressin Acetate Trihydrate chemical structure

Desmopressin Acetate Trihydrate

CAS: 62357-86-2
Formula: C₄₈H₇₄N₁₄O₁₇S₂
MW: 1183.3 g/mol

VQ-036639

Reference Standard

Desmopressin EP Impurity D chemical structure

Desmopressin EP Impurity D

CAS: 113-81-5
Formula: C₄₆H₆₄N₁₄O₁₂S₂
MW: 1069.2 g/mol

VQ-030137

Reference Standard

Desmopressin EP Impurity D Trifluoroacetate

Desmopressin EP Impurity D Trifluoroacetate

CAS: 126828-96-4
Formula: C₄₆H₆₄N₁₄O₁₂S₂.C₂HF₃O₂
MW: 1183.24 g/mol

VQ-047993

Reference Standard

Desmopressin Parallel Dimer Impurity

Desmopressin Parallel Dimer Impurity

CAS: 2764860-88-8
Formula: C₉₂H₁₂₈N₂₈O₂₄S₄
MW: 2138.4 g/mol

VQ-047994

Reference Standard

Desmosterol Sulfate chemical structure

Desmosterol Sulfate

CAS: 54378-86-8
Formula: C₂₇H₄₄O₄S
MW: 464.7 g/mol

VQ-043494

Reference Standard

Desogestrel chemical structure

CAS: 54024-22-5
Formula: C₂₂H₃₀O
MW: 310.5 g/mol

VQ-022329

Reference Standard

Desogestrel 13-beta-methyl Impurity

Desogestrel 13-beta-methyl Impurity

CAS: 882297-86-1
Formula: C₂₁H₂₈O₂
MW: 312.45 g/mol

VQ-044101

Reference Standard

Desogestrel EP Impurity A chemical structure

Desogestrel EP Impurity A

CAS: 201360-82-9
Formula: C₂₂H₃₀O
MW: 310.5 g/mol

VQ-022332

Reference Standard

Desogestrel EP Impurity B chemical structure

Desogestrel EP Impurity B

CAS: 54024-12-3
Formula: C₂₁H₂₈O
MW: 296.4 g/mol

VQ-022333

Reference Standard

Desogestrel EP Impurity C chemical structure

Desogestrel EP Impurity C

CAS: 54024-21-4
Formula: C₂₀H₂₈O
MW: 284.4 g/mol

VQ-022331

Reference Standard

Desogestrel EP Impurity D chemical structure

Desogestrel EP Impurity D

CAS: 54048-10-1
Formula: C₂₂H₂₈O₂
MW: 324.5 g/mol

VQ-022334

Reference Standard

Desogestrel EP Impurity E chemical structure

Desogestrel EP Impurity E

CAS: 70805-85-5
Formula: C₂₂H₃₀O₂
MW: 326.5 g/mol

VQ-022330

Reference Standard

Desonide chemical structure

CAS: 638-94-8
Formula: C₂₄H₃₂O₆
MW: 416.5 g/mol

VQ-021908

Reference Standard

Desonide 21-Aldehyde chemical structure

Desonide 21-Aldehyde

CAS: 57171-18-3
Formula: C₂₄H₃₀O₆
MW: 414.5 g/mol

VQ-024673

Reference Standard

Desosaminylazithromycin chemical structure

Desosaminylazithromycin

CAS: 117693-41-1
Formula: C₃₀H₅₈N₂O₉
MW: 590.8 g/mol

VQ-020879

Reference Standard

Desoximetasone chemical structure

CAS: 382-67-2
Formula: C₂₂H₂₉FO₄
MW: 376.5 g/mol

In stock

Reference Standard

Desoximetasone EP Impurity F chemical structure

Desoximetasone EP Impurity F

CAS: 184899-80-7
Formula: C₂₂H₂₉FO₃
MW: 360.5 g/mol

VQ-036641

Reference Standard

Desoximetasone EP Impurity H chemical structure

Desoximetasone EP Impurity H

CAS: 52092-65-6
Formula: C₂₄H₃₀O₅
MW: 398.5 g/mol

VQ-030140

Reference Standard

Desoximetasone EP Impurity S chemical structure

Desoximetasone EP Impurity S

CAS: 151265-33-7
Formula: C₂₂H₂₈O₄
MW: 356.5 g/mol

VQ-022335

Reference Standard

Desoximetasone Impurity A chemical structure

Desoximetasone Impurity A

CAS: 61618-63-1
Formula: C₂₁H₂₅FO₄
MW: 360.4 g/mol

VQ-036640

Reference Standard

Desoxo-palbociclib chemical structure

Desoxo-palbociclib

CAS: 2204863-06-7
Formula: C₂₄H₂₉N₇O
MW: 431.5 g/mol

VQ-004775

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