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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

Lurbinectedin chemical structure

CAS: 497871-47-3
Formula: C₄₁H₄₄N₄O₁₀S
MW: 784.9 g/mol

VQ-038218

Reference Standard

Lurbinectedin metabolite M4 chemical structure

Lurbinectedin metabolite M4

CAS: 577748-36-8
Formula: C₄₀H₄₂N₄O₁₀S
MW: 770.8 g/mol

VQ-038219

Reference Standard

Luseogliflozin chemical structure

CAS: 898537-18-3
Formula: C₂₃H₃₀O₆S
MW: 434.5 g/mol

VQ-044710

Reference Standard

Luseogliflozin hydrate chemical structure

Luseogliflozin hydrate

CAS: 1152425-66-5
Formula: C₂₃H₃₂O₇S
MW: 452.6 g/mol

VQ-038220

Reference Standard

Lutein chemical structure

CAS: 127-40-2
Formula: C₄₀H₅₆O₂
MW: 568.9 g/mol

VQ-038221

Reference Standard

Luteolin 4′-O-β-D-glucuronide chemical structure

Luteolin 4′-O-β-D-glucuronide

CAS: 53527-43-8
Formula: C₂₁H₁₈O₁₂
MW: 462.4 g/mol

VQ-040989

Reference Standard

Luteolin-3`-O-glucuronide chemical structure

Luteolin-3`-O-glucuronide

CAS: 53527-42-7
Formula: C₂₁H₁₈O₁₂
MW: 462.4 g/mol

VQ-052031

Reference Standard

Luteolin-7-O-Glucuronide chemical structure

Luteolin-7-O-Glucuronide

CAS: 29741-10-4
Formula: C₂₁H₁₈O₁₂
MW: 462.4 g/mol

VQ-032373

Reference Standard

Lycopene chemical structure

CAS: 502-65-8
Formula: C₄₀H₅₆
MW: 536.9 g/mol

VQ-038222

Reference Standard

Lycoramine chemical structure

CAS: 21133-52-8
Formula: C₁₇H₂₃NO₃
MW: 289.4 g/mol

VQ-022740

Reference Standard

Lycorine Hydrochloride chemical structure

Lycorine Hydrochloride

CAS: 2188-68-3
Formula: C₁₆H₁₈ClNO₄
MW: 323.77 g/mol

VQ-038225

Reference Standard

Lymecycline chemical structure

CAS: 992-21-2
Formula: C₂₉H₃₈N₄O₁₀
MW: 602.6 g/mol

VQ-031699

Reference Standard

Lymecycline EP Impurity B Hydrochloride

Lymecycline EP Impurity B Hydrochloride

CAS: 7322-80-7
Formula: C₂₃H₂₅NO₈.HCl
MW: 479.91 g/mol

VQ-048995

Reference Standard

Lynestrenol chemical structure

CAS: 52-76-6
Formula: C₂₀H₂₈O
MW: 284.4 g/mol

VQ-031700

Reference Standard

Lynestrenol EP Impurity B chemical structure

Lynestrenol EP Impurity B

CAS: 58311-09-4
Formula: C₂₀H₂₈O
MW: 284.4 g/mol

VQ-038226

Reference Standard

Lynestrenol EP Impurity C chemical structure

Lynestrenol EP Impurity C

CAS: 5225-38-7
Formula: C₂₀H₃₀O
MW: 286.5 g/mol

VQ-031701

Reference Standard

Lypressin chemical structure

CAS: 50-57-7
Formula: C₄₆H₆₅N₁₃O₁₂S₂
MW: 1056.2 g/mol

VQ-038227

Reference Standard

Lys-(Ac)5 Lanreotide

Lys-(Ac)5 Lanreotide

CAS: 1353092-24-6
Formula: C₅₆H₇₁N₁₁O₁₁S₂
MW: 1138.36 g/mol

VQ-026353

Reference Standard

Lys-SMCC-DM1 chemical structure

CAS: 1281816-04-3
Formula: C₅₃H₇₅ClN₆O₁₅S
MW: 1103.7 g/mol

VQ-031792

Reference Standard

Lysergol chemical structure

CAS: 602-85-7
Formula: C₁₆H₁₈N₂O
MW: 254.33 g/mol

VQ-038228

Reference Standard

Lysine Clonixinate chemical structure

Lysine Clonixinate

CAS: 55837-30-4
Formula: C₁₉H₂₅ClN₄O₄
MW: 408.9 g/mol

VQ-031703

Reference Standard

Lysine Hydrochloride chemical structure

Lysine Hydrochloride

CAS: 657-27-2
Formula: C₆H₁₅ClN₂O₂
MW: 182.65 g/mol

VQ-007556

Reference Standard

m-Cresol-4-Sulfonic Acid Ammonium chemical structure

m-Cresol-4-Sulfonic Acid Ammonium

CAS: 2742982-16-5
Formula: C₇H₁₁NO₄S
MW: 205.23 g/mol

VQ-035720

Reference Standard

M-Methyl Piperizene Impurity chemical structure

M-Methyl Piperizene Impurity

CAS: 112811-58-2
Formula: C₁₉H₂₂FN₃O₄
MW: 375.4 g/mol

VQ-038518

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