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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

Desaminosulfonyl Dorzolamide Hydrochloride chemical structure

Desaminosulfonyl Dorzolamide Hydrochloride

CAS: 897657-77-1
Formula: C₁₀H₁₆ClNO₂S₂
MW: 281.8 g/mol

VQ-036798

Reference Standard

Desbenzyl Donepezil Hydrochloride chemical structure

Desbenzyl Donepezil Hydrochloride

CAS: 120013-39-0
Formula: C₁₇H₂₄ClNO₃
MW: 325.8 g/mol

VQ-030276

Reference Standard

Desbutyrate Elagolix chemical structure

Desbutyrate Elagolix

CAS: 830346-50-4
Formula: C₂₈H₂₄F₅N₃O₃
MW: 545.5 g/mol

VQ-035115

Reference Standard

Descarbamoyl Cenobamate 1-isomer chemical structure

Descarbamoyl Cenobamate 1-isomer

CAS: 1259059-74-9
Formula: C₉H₉ClN₄O
MW: 224.65 g/mol

VQ-024902

Reference Standard

Descarbamoyl Degarelix Impurity chemical structure

Descarbamoyl Degarelix Impurity

CAS: 2648486-37-5
Formula: C₈₁H₁₀₂ClN₁₇O₁₅
MW: 1589.2 g/mol

VQ-025235

Reference Standard

Descarbamoyloxy Cefoxitin chemical structure

Descarbamoyloxy Cefoxitin

CAS: 40514-94-1
Formula: C₁₅H₁₆N₂O₅S₂
MW: 368.4 g/mol

VQ-045405

Reference Standard

Descarbonyl Avibactam chemical structure

Descarbonyl Avibactam

CAS: 2243810-78-6
Formula: C₆H₁₃N₃O₅S
MW: 239.25 g/mol

VQ-024448

Reference Standard

Descarboxy Ceftibuten

Descarboxy Ceftibuten

CAS: 110630-32-5
Formula: C₁₄H₁₄N₄O₄S₂
MW: 366.41 g/mol

VQ-043731

Reference Standard

Descarboxyl Levofloxacin

Descarboxyl Levofloxacin

CAS: 1430222-73-3
Formula: C₁₆H₁₈FN₃O₂
MW: 303.33 g/mol

VQ-007133

Reference Standard

Descarboxyl Levofloxacin Trifluoroacetic Acid

Descarboxyl Levofloxacin Trifluoroacetic Acid

CAS: 1430222-73-3
Formula: C₁₆H₁₈FN₃O₂.C₂HF₃O₂
MW: 417.35 g/mol

In stock

Reference Standard

Descarboxymethyl Cyanomethyl Treprostinil chemical structure

Descarboxymethyl Cyanomethyl Treprostinil

CAS: 101692-03-9
Formula: C₂₃H₃₃NO₃
MW: 371.5 g/mol

VQ-034418

Reference Standard

Descarboxymethyl Treprostinil chemical structure

Descarboxymethyl Treprostinil

CAS: 101692-02-8
Formula: C₂₁H₃₂O₃
MW: 332.5 g/mol

VQ-028490

Reference Standard

Deschloro Acenapine chemical structure

Deschloro Acenapine

CAS: 1847487-56-2
Formula: C₁₇H₁₇NO
MW: 251.32 g/mol

In stock

Reference Standard

Deschloro Amlodipine chemical structure

Deschloro Amlodipine

CAS: 88150-52-1
Formula: C₂₀H₂₆N₂O₅
MW: 374.4 g/mol

VQ-029129

Reference Standard

Deschloro Asciminib Impurity chemical structure

Deschloro Asciminib Impurity

CAS: 3033653-93-6
Formula: C₂₀H₁₉F₂N₅O₃
MW: 415.4 g/mol

VQ-035457

Reference Standard

Deschloro Asenapine

Deschloro Asenapine

CAS: 65576-39-8
Formula: C₁₇H₁₇NO
MW: 251.33 g/mol

VQ-024373

Reference Standard

Deschloro Atovaquone chemical structure

Deschloro Atovaquone

CAS: 92458-44-1
Formula: C₂₂H₂₀O₃
MW: 332.4 g/mol

VQ-035103

Reference Standard

Deschloro Bupropion (Free Base) chemical structure

Deschloro Bupropion (Free Base)

CAS: 34509-36-9
Formula: C₁₃H₁₉NO
MW: 205.3 g/mol

VQ-043935

Reference Standard

Deschloro Clomiphene chemical structure

Deschloro Clomiphene

CAS: 19957-52-9
Formula: C₂₆H₂₉NO
MW: 371.5 g/mol

VQ-025043

Reference Standard

Deschloro Clomiphene Hydrochloride (E/Z Mixture) chemical structure

Deschloro Clomiphene Hydrochloride (E/Z Mixture)

CAS: 74056-26-1
Formula: C₂₆H₃₀ClNO
MW: 408 g/mol

VQ-022232

Reference Standard

Deschloro Clomiphene Z-Isomer

Deschloro Clomiphene Z-Isomer

CAS: 97800-40-3
Formula: C₂₆H₂₉NO
MW: 371.5 g/mol

VQ-044354

Reference Standard

Deschloro Dasatinib chemical structure

Deschloro Dasatinib

CAS: 1184919-23-0
Formula: C₂₂H₂₇N₇O₂S
MW: 453.6 g/mol

In stock

Reference Standard

Deschloro Diazoxide Impurity chemical structure

Deschloro Diazoxide Impurity

CAS: 360-81-6
Formula: C₈H₈N₂O₂S
MW: 196.23 g/mol

In stock

Reference Standard

Deschloro Etifoxine

Deschloro Etifoxine

CAS: 2548763-33-1
Formula: C₁₇H₁₈N₂O
MW: 266.34 g/mol

VQ-037143

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