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Impurities & Reference Standards

API Impurities

Source 1942 api impurities for research, QC and production, documented with COA and SDS.

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Reference Standard

Fluticasone 11-Keto Impurity chemical structure

Fluticasone 11-Keto Impurity

CAS: 397864-56-1
Formula: C₂₇H₂₇F₃O₆S
MW: 536.6 g/mol

VQ-030843

Reference Standard

Fluticasone 17-beta-Carboxylic Acid chemical structure

Fluticasone 17-beta-Carboxylic Acid

CAS: 28416-82-2
Formula: C₂₁H₂₆F₂O₅
MW: 396.4 g/mol

VQ-022698

Reference Standard

Fluticasone 2-(Fluoromethoxy)acetyl Furan-2-carboxylic Acid chemical structure

Fluticasone 2-(Fluoromethoxy)acetyl Furan-2-carboxylic Acid

CAS: 572880-17-2
Formula: C₂₇H₂₉F₃O₇
MW: 522.5 g/mol

VQ-025884

Reference Standard

Fluticasone 21-Isobutyrate chemical structure

Fluticasone 21-Isobutyrate

CAS: 1648562-63-3
Formula: C₂₆H₃₃F₃O₅S
MW: 514.6 g/mol

VQ-030839

Reference Standard

Fluticasone Carbothioic Acid Impurity chemical structure

Fluticasone Carbothioic Acid Impurity

CAS: 80474-45-9
Formula: C₂₄H₃₀F₂O₅S
MW: 468.6 g/mol

VQ-030835

Reference Standard

Fluticasone Furoate 1,2 dihydro Impurity chemical structure

Fluticasone Furoate 1,2 dihydro Impurity

CAS: 398454-98-3
Formula: C₂₇H₃₁F₃O₆S
MW: 540.6 g/mol

VQ-037376

Reference Standard

Fluticasone Furoate Sulfenic Acid Impurity chemical structure

Fluticasone Furoate Sulfenic Acid Impurity

CAS: 948566-11-8
Formula: C₂₆H₂₈F₂O₇S
MW: 522.6 g/mol

VQ-030840

Reference Standard

Fluticasone Impurity 12 chemical structure

Fluticasone Impurity 12

CAS: 80474-13-1
Formula: C₂₅H₃₂F₂O₅S
MW: 482.6 g/mol

VQ-048441

Reference Standard

Fluticasone Impurity 21 chemical structure

Fluticasone Impurity 21

CAS: 22593-10-8
Formula: C₂₅H₃₂F₂O₆
MW: 466.5 g/mol

VQ-037378

Reference Standard

Fluticasone Impurity 22 chemical structure

Fluticasone Impurity 22

CAS: 709002-84-6
Formula: C₂₄H₃₁F₂NO₅S
MW: 483.6 g/mol

VQ-030846

Reference Standard

Fluticasone Impurity 28 chemical structure

Fluticasone Impurity 28

CAS: 192191-49-4
Formula: C₂₅H₃₀F₂O₅S
MW: 480.6 g/mol

VQ-035199

Reference Standard

Fluticasone Impurity 8 chemical structure

Fluticasone Impurity 8

CAS: 80473-92-3
Formula: C₂₁H₂₆F₂O₄S
MW: 412.5 g/mol

VQ-030845

Reference Standard

Fluvastatin Ethyl Boronate Ester chemical structure

Fluvastatin Ethyl Boronate Ester

CAS: 927436-37-1
Formula: C₃₀H₃₇BFNO₄
MW: 505.4 g/mol

VQ-044279

Reference Standard

Fluvastatin Lactone chemical structure

Fluvastatin Lactone

CAS: 94061-83-3
Formula: C₂₄H₂₄FNO₃
MW: 393.4 g/mol

VQ-030850

Reference Standard

Fluvastatin N-Ethyl Sodium Salt chemical structure

Fluvastatin N-Ethyl Sodium Salt

CAS: 93936-64-2
Formula: C₂₃H₂₃FNNaO₄
MW: 419.4 g/mol

VQ-030853

Reference Standard

Fluvoxamine Acid chemical structure

Fluvoxamine Acid

CAS: 88699-91-6
Formula: C₁₄H₁₇F₃N₂O₃
MW: 318.29 g/mol

VQ-025891

Reference Standard

Fluvoxamine Maleic Acid Monoamide Impurity chemical structure

Fluvoxamine Maleic Acid Monoamide Impurity

CAS: 1076198-14-5
Formula: C₁₉H₂₃F₃N₂O₅
MW: 416.4 g/mol

VQ-022705

Reference Standard

Fluxapyroxad Impurity 1 chemical structure

Fluxapyroxad Impurity 1

CAS: 918886-15-4
Formula: C₁₈H₁₃F₄N₃O
MW: 363.3 g/mol

VQ-048447

Reference Standard

Fmoc-dehydro-Ala-OH chemical structure

Fmoc-dehydro-Ala-OH

CAS: 261522-33-2
Formula: C₁₈H₁₅NO₄
MW: 309.3 g/mol

VQ-032508

Reference Standard

Fmoc-Gly-Gly-Gly-OH chemical structure

Fmoc-Gly-Gly-Gly-OH

CAS: 170941-79-4
Formula: C₂₁H₂₁N₃O₆
MW: 411.4 g/mol

VQ-041105

Reference Standard

Fmoc-Kynurenine chemical structure

Fmoc-Kynurenine

CAS: 831210-89-0
Formula: C₂₅H₂₂N₂O₅
MW: 430.5 g/mol

VQ-039873

Reference Standard

Fmoc-L-Ala-ethyl ester

Fmoc-L-Ala-ethyl ester

CAS: 117402-82-1
Formula: C₂₀H₂₁NO₄
MW: 339.39 g/mol

VQ-032697

Reference Standard

Fmoc-L-Ala-methyl ester chemical structure

Fmoc-L-Ala-methyl ester

CAS: 146346-88-5
Formula: C₁₉H₁₉NO₄
MW: 325.4 g/mol

VQ-039733

Reference Standard

Fmoc-L-Ala-tert-butyl ester chemical structure

Fmoc-L-Ala-tert-butyl ester

CAS: 71953-00-9
Formula: C₂₂H₂₅NO₄
MW: 367.4 g/mol

VQ-032698

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