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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

Gefitinib Impurity 50 chemical structure

Gefitinib Impurity 50

CAS: 692059-41-9
Formula: C₁₂H₁₂Cl₂N₂O₂
MW: 287.14 g/mol

VQ-037490

Reference Standard

Gefitinib Impurity II chemical structure

Gefitinib Impurity II

CAS: 153437-78-6
Formula: C₁₆H₁₃ClFN₃O₂
MW: 333.74 g/mol

VQ-025969

Reference Standard

Gefitinib Impurity VIII chemical structure

Gefitinib Impurity VIII

CAS: 788136-89-0
Formula: C₁₇H₁₃ClFN₃O₃
MW: 361.8 g/mol

In stock

Reference Standard

Gefitinib Impurity-D (Stage-1)

Gefitinib Impurity-D (Stage-1)

Formula: C₁₆H₂₂ClN₃O₃
MW: 339.82 g/mol

In stock

Reference Standard

Gefitinib Morpholine N-oxide chemical structure

Gefitinib Morpholine N-oxide

CAS: 847949-51-3
Formula: C₂₂H₂₄ClFN₄O₄
MW: 462.9 g/mol

VQ-025966

Reference Standard

Gefitinib-d6 chemical structure

CAS: 1228664-49-0
Formula: C₂₂H₂₄ClFN₄O₃
MW: 452.9 g/mol

VQ-037495

Reference Standard

Gefitinib-d8 chemical structure

CAS: 857091-32-8
Formula: C₂₂H₂₄ClFN₄O₃
MW: 454.9 g/mol

VQ-030957

Reference Standard

Gemcitabine chemical structure

CAS: 95058-81-4
Formula: C₉H₁₁F₂N₃O₄
MW: 263.2 g/mol

VQ-030962

Reference Standard

Gemcitabine 3-benzoate chemical structure

Gemcitabine 3-benzoate

CAS: 1147182-15-7
Formula: C₁₆H₁₅F₂N₃O₅
MW: 367.3 g/mol

VQ-030961

Reference Standard

Gemcitabine 5-benzoate chemical structure

Gemcitabine 5-benzoate

CAS: 2174019-90-8
Formula: C₁₆H₁₅F₂N₃O₅
MW: 367.3 g/mol

VQ-037499

Reference Standard

Gemcitabine EP Impurity B chemical structure

Gemcitabine EP Impurity B

CAS: 122111-05-1
Formula: C₉H₁₂ClF₂N₃O₄
MW: 299.66 g/mol

VQ-025971

Reference Standard

Gemcitabine EP Impurity B chemical structure

Gemcitabine EP Impurity B

CAS: 95058-85-8
Formula: C₉H₁₁F₂N₃O₄
MW: 263.2 g/mol

VQ-030971

Reference Standard

Gemcitabine EP Impurity C chemical structure

Gemcitabine EP Impurity C

CAS: 114248-23-6
Formula: C₉H₁₀F₂N₂O₅
MW: 264.18 g/mol

VQ-025970

Reference Standard

Gemcitabine EP Impurity C-13C,15N2 chemical structure

Gemcitabine EP Impurity C-13C,15N2

CAS: 1233921-75-9
Formula: C₉H₁₀F₂N₂O₅
MW: 267.16 g/mol

VQ-048515

Reference Standard

Gemcitabine Impurity 15 chemical structure

Gemcitabine Impurity 15

CAS: 122111-01-7
Formula: C₁₉H₁₄F₂O₆
MW: 376.3 g/mol

In stock

Reference Standard

Gemcitabine Impurity 31 chemical structure

Gemcitabine Impurity 31

CAS: 122111-12-0
Formula: C₅H₆F₂O₄
MW: 168.1 g/mol

VQ-048511

Reference Standard

Gemcitabine Impurity 4 chemical structure

Gemcitabine Impurity 4

CAS: 294177-31-4
Formula: C₉H₁₀F₂N₂O₅
MW: 264.18 g/mol

VQ-037496

Reference Standard

Gemcitabine Impurity 6 chemical structure

Gemcitabine Impurity 6

CAS: 1173824-58-2
Formula: C₁₉H₁₆F₂O₆
MW: 378.3 g/mol

VQ-048512

Reference Standard

Gemcitabine Triphosphate chemical structure

Gemcitabine Triphosphate

CAS: 110988-86-8
Formula: C₉H₁₄F₂N₃O₁₃P₃
MW: 503.14 g/mol

VQ-048513

Reference Standard

Gemcitabine-13C-15N2 chemical structure

Gemcitabine-13C-15N2

CAS: 1233921-74-8
Formula: C₉H₁₁F₂N₃O₄
MW: 266.18 g/mol

VQ-048514

Reference Standard

Gemcitabine-13C,15N2 Hydrochloride chemical structure

Gemcitabine-13C,15N2 Hydrochloride

CAS: 1262897-74-4
Formula: C₉H₁₂ClF₂N₃O₄
MW: 302.64 g/mol

VQ-037502

Reference Standard

Gemfibrozil chemical structure

CAS: 25812-30-0
Formula: C₁₅H₂₂O₃
MW: 250.33 g/mol

VQ-025972

Reference Standard

Gemfibrozil 1-O-Beta-Glucuronide chemical structure

Gemfibrozil 1-O-Beta-Glucuronide

CAS: 91683-38-4
Formula: C₂₁H₃₀O₉
MW: 426.5 g/mol

VQ-030974

Reference Standard

Gemfibrozil EP Impurity B chemical structure

Gemfibrozil EP Impurity B

CAS: 114413-97-7
Formula: C₁₅H₂₃NO₂
MW: 249.35 g/mol

VQ-030972

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