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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.

27,990products

6sub-categories

2,746in stock

COA + SDSwith every lot

API Impurities 14,098 Pharmacopeial Impurities (EP / USP / BP) 4,399 Nitrosamine Impurities 631 Stable Isotope Labelled Standards (Deuterated, 13C, 15N) 1,504 Metabolites & Degradation Products 3,922 API Reference Standards 3,436

Reference Standard

Proparacaine Ethoxy Analog chemical structure

Proparacaine Ethoxy Analog

CAS: 69781-24-4
Formula: C₁₅H₂₅ClN₂O₃
MW: 316.82 g/mol

VQ-033360

Reference Standard

Proparacaine Hydrochloride chemical structure

Proparacaine Hydrochloride

CAS: 5875-06-9
Formula: C₁₆H₂₇ClN₂O₃
MW: 330.8 g/mol

VQ-041720

Reference Standard

Proparacaine Impurity 2 chemical structure

Proparacaine Impurity 2

CAS: 2815508-81-5
Formula: C₁₃H₁₉NO₅
MW: 269.29 g/mol

VQ-041722

Reference Standard

Proparacaine Impurity 4 chemical structure

Proparacaine Impurity 4

CAS: 100811-81-2
Formula: C₁₃H₂₀Cl₂N₂O₂
MW: 307.21 g/mol

VQ-033361

Reference Standard

Proparacaine impurity A chemical structure

Proparacaine impurity A

CAS: 2518105-74-1
Formula: C₁₃H₂₂Cl₂N₂O₃
MW: 325.2 g/mol

VQ-041721

Reference Standard

Proparacaine impurity B chemical structure

Proparacaine impurity B

CAS: 2518227-82-0
Formula: C₁₉H₃₄ClN₃O₃
MW: 387.9 g/mol

VQ-035344

Reference Standard

Propargite chemical structure

CAS: 2312-35-8
Formula: C₁₉H₂₆O₄S
MW: 350.5 g/mol

VQ-041724

Reference Standard

Propargyl Benzenesulfonate chemical structure

Propargyl Benzenesulfonate

CAS: 6165-75-9
Formula: C₉H₈O₃S
MW: 196.22 g/mol

VQ-027173

Reference Standard

Propargyl Tosylate chemical structure

Propargyl Tosylate

CAS: 6165-76-0
Formula: C₁₀H₁₀O₃S
MW: 210.25 g/mol

VQ-044712

Reference Standard

Propentofylline chemical structure

Propentofylline

CAS: 55242-55-2
Formula: C₁₅H₂₂N₄O₃
MW: 306.36 g/mol

VQ-033363

Reference Standard

Propiconazole chemical structure

CAS: 60207-90-1
Formula: C₁₅H₁₇Cl₂N₃O₂
MW: 342.2 g/mol

VQ-033364

Reference Standard

Propiconazole-4H-1,2,4-triazole chemical structure

Propiconazole-4H-1,2,4-triazole

CAS: 221132-58-7
Formula: C₁₅H₁₇Cl₂N₃O₂
MW: 342.2 g/mol

VQ-033366

Reference Standard

Propineb chemical structure

CAS: 12071-83-9
Formula: C₅H₈N₂S₄Zn
MW: 289.8 g/mol

VQ-038858

Reference Standard

Propinox Hydrochloride chemical structure

Propinox Hydrochloride

CAS: 2765-97-1
Formula: C₂₁H₂₄ClNO₃
MW: 373.9 g/mol

VQ-033367

Reference Standard

Propioguaiacol chemical structure

CAS: 1835-14-9
Formula: C₁₀H₁₂O₃
MW: 180.2 g/mol

VQ-037662

Reference Standard

Propiolic Acid chemical structure

CAS: 471-25-0
Formula: C₃H₂O₂
MW: 70.05 g/mol

VQ-032545

Reference Standard

Propiomazine chemical structure

CAS: 362-29-8
Formula: C₂₀H₂₄N₂OS
MW: 340.5 g/mol

VQ-041726

Reference Standard

Propiomazine Maleate chemical structure

Propiomazine Maleate

CAS: 3568-23-8
Formula: C₂₄H₂₈N₂O₅S
MW: 456.6 g/mol

VQ-033368

Reference Standard

Propionic Acid-d3 chemical structure

Propionic Acid-d3

CAS: 55577-88-3
Formula: C₃H₆O₂
MW: 77.1 g/mol

VQ-041233

Reference Standard

Propionyl glycine chemical structure

Propionyl glycine

CAS: 21709-90-0
Formula: C₅H₉NO₃
MW: 131.13 g/mol

VQ-040187

Reference Standard

Propionyl-L-carnitine HCl chemical structure

Propionyl-L-carnitine HCl

CAS: 119793-66-7
Formula: C₁₀H₂₀ClNO₄
MW: 253.72 g/mol

VQ-040606

Reference Standard

Propiophenone chemical structure

CAS: 93-55-0
Formula: C₉H₁₀O
MW: 134.17 g/mol

VQ-027111

Reference Standard

Propiverine Chloro Impurity chemical structure

Propiverine Chloro Impurity

CAS: 118108-64-8
Formula: C₂₀H₂₂ClNO₂
MW: 343.8 g/mol

VQ-041730

Reference Standard

Propiverine Hydrochloride chemical structure

Propiverine Hydrochloride

CAS: 54556-98-8
Formula: C₂₃H₃₀ClNO₃
MW: 403.9 g/mol

VQ-033369

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