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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

Encorafenib R-Isomer chemical structure

Encorafenib R-Isomer

CAS: 1269440-29-0
Formula: C₂₂H₂₇ClFN₇O₄S
MW: 540 g/mol

VQ-022519

Reference Standard

Endo Lurasidone chemical structure

Endo Lurasidone

CAS: 1318074-25-7
Formula: C₂₈H₃₆N₄O₂S
MW: 492.7 g/mol

VQ-026541

Reference Standard

endo-9-Methyl-9-azabicyclo[3.3.1]nonan-3-amine Dihydrochloride chemical structure

endo-9-Methyl-9-azabicyclo[3.3.1]nonan-3-amine Dihydrochloride

CAS: 135906-03-5
Formula: C₉H₂₀Cl₂N₂
MW: 227.17 g/mol

VQ-037561

Reference Standard

Endo-Cis Lurasidone chemical structure

Endo-Cis Lurasidone

CAS: 1318074-20-2
Formula: C₂₈H₃₆N₄O₂S
MW: 492.7 g/mol

VQ-031697

Reference Standard

endo-Gly9a-Vasopressin

endo-Gly9a-Vasopressin

CAS: 77403-94-2
Formula: C₄₈H₆₇N₁₅O₁₄S₂
MW: 1142.3 g/mol

VQ-042832

Reference Standard

Endo-Gly9a-Vasopressin

Endo-Gly9a-Vasopressin

CAS: 114665-05-3
Formula: C₄₈H₆₇N₁₅O₁₄S₂
MW: 1142.28 g/mol

VQ-043345

Reference Standard

Endosulfan Sulfate chemical structure

Endosulfan Sulfate

CAS: 1031-07-8
Formula: C₉H₆Cl₆O₄S
MW: 422.9 g/mol

VQ-038947

Reference Standard

Endotoxin

CAS: 67924-63-4

VQ-048214

Reference Standard

Endoxifen (E/Z Mixture) chemical structure

Endoxifen (E/Z Mixture)

CAS: 110025-28-0
Formula: C₂₅H₂₇NO₂
MW: 373.5 g/mol

VQ-042621

Reference Standard

Endoxifen citrate

Endoxifen citrate

CAS: 1372937-28-4
Formula: C₃₁H₃₅NO₉
MW: 565.61 g/mol

VQ-036990

Reference Standard

Endoxifen E-isomer Hydrochloride chemical structure

Endoxifen E-isomer Hydrochloride

CAS: 1197194-61-8
Formula: C₂₅H₂₈ClNO₂
MW: 409.9 g/mol

VQ-042624

Reference Standard

Endoxifen Impurity 1

Endoxifen Impurity 1

CAS: 1277171-34-2
Formula: C₂₅H₂₇NO₃
MW: 389.49 g/mol

VQ-042622

Reference Standard

Endoxifen Z-Isomer Hydrochloride chemical structure

Endoxifen Z-Isomer Hydrochloride

CAS: 1032008-74-4
Formula: C₂₅H₂₈ClNO₂
MW: 409.9 g/mol

VQ-042623

Reference Standard

Endrin chemical structure

CAS: 72-20-8
Formula: C₁₂H₈Cl₆O
MW: 380.9 g/mol

VQ-036991

Reference Standard

Enduracidin - ca. 8%

Enduracidin - ca. 8%

CAS: 11115-82-5
Formula: C₁₀₇H₁₄₀Cl₂N₂₆O₃₂
MW: 2373.3 g/mol

VQ-036994

Reference Standard

Endurobol chemical structure

CAS: 317318-70-0
Formula: C₂₁H₁₈F₃NO₃S₂
MW: 453.5 g/mol

VQ-040652

Reference Standard

Ene Sacubitril

CAS: 2957885-24-2
Formula: C₂₄H₂₇NO₅
MW: 409.47 g/mol

VQ-027963

Reference Standard

Enisamium Iodide chemical structure

Enisamium Iodide

CAS: 201349-37-3
Formula: C₁₄H₁₅IN₂O
MW: 354.19 g/mol

VQ-041124

Reference Standard

Enoxacin chemical structure

CAS: 74011-58-8
Formula: C₁₅H₁₇FN₄O₃
MW: 320.32 g/mol

VQ-036995

Reference Standard

Enoxacin Sesquihydrate chemical structure

Enoxacin Sesquihydrate

CAS: 84294-96-2
Formula: C₃₀H₄₀F₂N₈O₉
MW: 694.7 g/mol

VQ-048215

Reference Standard

Enoxaparin sodium

Enoxaparin sodium

CAS: 679809-58-6
Formula: C₄₂H₅₉N₃Na₄O₃₅S₂
MW: 1322.01 g/mol

VQ-036996

Reference Standard

Enoxolone EP Impurity A chemical structure

Enoxolone EP Impurity A

CAS: 1449-05-4
Formula: C₃₀H₄₆O₄
MW: 470.7 g/mol

VQ-027217

Reference Standard

Enoxolone EP Impurity B chemical structure

Enoxolone EP Impurity B

CAS: 52911-55-4
Formula: C₃₀H₄₆O₅
MW: 486.7 g/mol

VQ-026020

Reference Standard

Enoxolone EP Impurity C chemical structure

Enoxolone EP Impurity C

CAS: 50627-79-7
Formula: C₃₀H₄₆O₃
MW: 454.7 g/mol

VQ-031026

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