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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

Fingolimod Nonyl Impurity (Stage-1)

Fingolimod Nonyl Impurity (Stage-1)

Formula: C₁₈H₂₇ClO
MW: 294.86 g/mol

In stock

Reference Standard

Fingolimod O-Acetyl Impurity chemical structure

Fingolimod O-Acetyl Impurity

CAS: 1807973-92-7
Formula: C₂₁H₃₅NO₃
MW: 349.5 g/mol

In stock

Reference Standard

Fingolimod O-Acetyl Impurity (N-1) Stage

Fingolimod O-Acetyl Impurity (N-1) Stage

Formula: C₂₄H₂₉NO₃
MW: 379.49 g/mol

In stock

Reference Standard

Fingolimode Heptan Impurity (Hydrochloride)

Fingolimode Heptan Impurity (Hydrochloride)

Formula: C₁₆H₂₇NO₂.ClH
MW: 301.85 g/mol

In stock

Reference Standard

Fipronil Sulfide chemical structure

Fipronil Sulfide

CAS: 120067-83-6
Formula: C₁₂H₄Cl₂F₆N₄S
MW: 421.1 g/mol

VQ-025797

Reference Standard

Fipronil Sulfone chemical structure

Fipronil Sulfone

CAS: 120068-36-2
Formula: C₁₂H₄Cl₂F₆N₄O₂S
MW: 453.1 g/mol

VQ-034835

Reference Standard

Firocoxib cyclobutane derivative

Firocoxib cyclobutane derivative

CAS: 189955-22-4
Formula: C₁₇H₂₀O₅S
MW: 336.4 g/mol

VQ-030754

Reference Standard

Firocoxib Impurity 1 chemical structure

Firocoxib Impurity 1

CAS: 180048-73-1
Formula: C₁₁H₁₄O₄S
MW: 242.29 g/mol

VQ-037292

Reference Standard

Firocoxib Impurity 3

Firocoxib Impurity 3

CAS: 246869-18-1
Formula: C₁₅H₁₈O₅S
MW: 310.37 g/mol

VQ-048397

Reference Standard

Flavan chemical structure

CAS: 494-12-2
Formula: C₁₅H₁₄O
MW: 210.27 g/mol

VQ-041709

Reference Standard

Flavone chemical structure

CAS: 525-82-6
Formula: C₁₅H₁₀O₂
MW: 222.24 g/mol

VQ-041708

Reference Standard

Flecainide Meta-O-dealkylated chemical structure

Flecainide Meta-O-dealkylated

CAS: 83526-33-4
Formula: C₁₅H₁₉F₃N₂O₃
MW: 332.32 g/mol

VQ-037301

Reference Standard

Flecainide N-acetyl chemical structure

Flecainide N-acetyl

CAS: 285143-14-8
Formula: C₁₉H₂₂F₆N₂O₄
MW: 456.4 g/mol

VQ-030757

Reference Standard

Florfenicol Amine chemical structure

Florfenicol Amine

CAS: 76639-93-5
Formula: C₁₀H₁₄FNO₃S
MW: 247.29 g/mol

VQ-030761

Reference Standard

Florfenicol Chloro Analogue chemical structure

Florfenicol Chloro Analogue

CAS: 1322625-10-4
Formula: C₁₂H₁₄Cl₃NO₄S
MW: 374.7 g/mol

VQ-030764

Reference Standard

Florfenicol Fluorinated Substance

Florfenicol Fluorinated Substance

CAS: 143026-79-3
Formula: C₁₂H₁₂Cl₂FNO₃S
MW: 340.2 g/mol

VQ-030763

Reference Standard

Fluazinam Impurity 1 chemical structure

Fluazinam Impurity 1

CAS: 169327-87-1
Formula: C₁₃H₄Cl₂F₆N₄O₄
MW: 465.09 g/mol

VQ-030767

Reference Standard

Fluconazole Impurity 27 chemical structure

Fluconazole Impurity 27

CAS: 1222655-38-0
Formula: C₁₄H₁₄F₂N₆O
MW: 320.3 g/mol

VQ-048409

Reference Standard

Fluconazole Impurity 28

Fluconazole Impurity 28

CAS: 95727-78-9
Formula: C₁₄H₁₄F₂N₆O
MW: 320.3 g/mol

VQ-048410

Reference Standard

Fluconazole Impurity 29

Fluconazole Impurity 29

CAS: 1184915-24-9
Formula: C₁₀H₉F₂N₃O
MW: 225.19 g/mol

VQ-037314

Reference Standard

Fluconazole Impurity 3

Fluconazole Impurity 3

CAS: 150194-53-9
Formula: C₁₁H₁₀F₂IN₃O
MW: 365.1 g/mol

VQ-037315

Reference Standard

Fluconazole Impurity 5 chemical structure

Fluconazole Impurity 5

CAS: 154534-83-5
Formula: C₁₀H₉ClF₂N₄O
MW: 274.65 g/mol

In stock

Reference Standard

Fluconazole Impurity 5 (Freebase) chemical structure

Fluconazole Impurity 5 (Freebase)

CAS: 755726-67-1
Formula: C₁₀H₉F₂N₄O⁺
MW: 239.2 g/mol

VQ-005007

Reference Standard

Flumethasone 21-Acetate chemical structure

Flumethasone 21-Acetate

CAS: 2823-42-9
Formula: C₂₄H₃₀F₂O₆
MW: 452.5 g/mol

VQ-025824

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