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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

Lobeglitazone chemical structure

CAS: 607723-33-1
Formula: C₂₄H₂₄N₄O₅S
MW: 480.5 g/mol

VQ-038095

Reference Standard

Lobeglitazone Dehydro Impurity

Lobeglitazone Dehydro Impurity

CAS: 607722-95-2
Formula: C₂₄H₂₂N₄O₅S
MW: 478.52 g/mol

VQ-031604

Reference Standard

Lobeglitazone LB-02 chemical structure

Lobeglitazone LB-02

CAS: 607723-87-5
Formula: C₂₁H₂₁N₃O₄
MW: 379.4 g/mol

VQ-031606

Reference Standard

Lobeglitazone sulfate chemical structure

Lobeglitazone sulfate

CAS: 763108-62-9
Formula: C₂₄H₂₆N₄O₉S₂
MW: 578.6 g/mol

VQ-038093

Reference Standard

Lobeline Hydrochloride chemical structure

Lobeline Hydrochloride

CAS: 134-63-4
Formula: C₂₂H₂₈ClNO₂
MW: 373.9 g/mol

VQ-038096

Reference Standard

Lobucavir chemical structure

CAS: 127759-89-1
Formula: C₁₁H₁₅N₅O₃
MW: 265.27 g/mol

VQ-038097

Reference Standard

Lofepramine chemical structure

CAS: 23047-25-8
Formula: C₂₆H₂₇ClN₂O
MW: 419 g/mol

VQ-038099

Reference Standard

Lofepramine Hydrochloride chemical structure

Lofepramine Hydrochloride

CAS: 26786-32-3
Formula: C₂₆H₂₈Cl₂N₂O
MW: 455.4 g/mol

VQ-038098

Reference Standard

Lofepramine Hydrochloride - Impurity A

Lofepramine Hydrochloride - Impurity A

CAS: 1268083-59-5
Formula: C₉H₁₁ClNO
MW: 184.64 g/mol

VQ-048915

Reference Standard

Lofexidine chemical structure

CAS: 31036-80-3
Formula: C₁₁H₁₂Cl₂N₂O
MW: 259.13 g/mol

VQ-038100

Reference Standard

Lofexidine Acid Impurity chemical structure

Lofexidine Acid Impurity

CAS: 25140-90-3
Formula: C₉H₈Cl₂O₃
MW: 235.06 g/mol

VQ-038101

Reference Standard

Lofexidine Hydrochloride chemical structure

Lofexidine Hydrochloride

CAS: 21498-08-8
Formula: C₁₁H₁₃Cl₃N₂O
MW: 295.6 g/mol

VQ-048917

Reference Standard

Lofexidine Nitrile Impurity chemical structure

Lofexidine Nitrile Impurity

CAS: 78302-27-9
Formula: C₉H₇Cl₂NO
MW: 216.06 g/mol

VQ-048916

Reference Standard

Lofexidine-d4 Hydrochloride chemical structure

Lofexidine-d4 Hydrochloride

CAS: 78302-26-8
Formula: C₁₁H₁₃Cl₃N₂O
MW: 299.6 g/mol

VQ-038102

Reference Standard

Loganin chemical structure

CAS: 18524-94-2
Formula: C₁₇H₂₆O₁₀
MW: 390.4 g/mol

VQ-039570

Reference Standard

Lomefloxacin chemical structure

CAS: 98079-51-7
Formula: C₁₇H₁₉F₂N₃O₃
MW: 351.35 g/mol

VQ-038104

Reference Standard

Lomefloxacin Hydrochloride chemical structure

Lomefloxacin Hydrochloride

CAS: 98079-52-8
Formula: C₁₇H₂₀ClF₂N₃O₃
MW: 387.8 g/mol

VQ-038103

Reference Standard

Lomitapide chemical structure

CAS: 182431-12-5
Formula: C₃₉H₃₇F₆N₃O₂
MW: 693.7 g/mol

VQ-038105

Reference Standard

Lomitapide M1 chemical structure

CAS: 182439-41-4
Formula: C₁₉H₁₉F₃N₂O
MW: 348.4 g/mol

VQ-031607

Reference Standard

Lomitapide M3 chemical structure

CAS: 182439-11-8
Formula: C₂₀H₁₈F₃NO₃
MW: 377.4 g/mol

VQ-031608

Reference Standard

Lomitapide Mesylate chemical structure

Lomitapide Mesylate

CAS: 202914-84-9
Formula: C₄₀H₄₁F₆N₃O₅S
MW: 789.8 g/mol

VQ-038106

Reference Standard

Lomitapide Metabolite M9 chemical structure

Lomitapide Metabolite M9

CAS: 182430-98-4
Formula: C₃₉H₃₇F₆N₃O₃
MW: 709.7 g/mol

VQ-048918

Reference Standard

Lomustine chemical structure

CAS: 13010-47-4
Formula: C₉H₁₆ClN₃O₂
MW: 233.69 g/mol

VQ-031609

Reference Standard

Lomustine EP Impurity A chemical structure

Lomustine EP Impurity A

CAS: 2214-72-4
Formula: C₅H₁₀Cl₂N₂O
MW: 185.05 g/mol

VQ-022025

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