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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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1,516in stock

COA + SDSwith every lot

Reference Standard

Fluoxetine Lactose Adduct

Fluoxetine Lactose Adduct

CAS: 199188-94-8
Formula: C₂₉H₃₈F₃NO₁₁
MW: 633.61 g/mol

VQ-045127

Reference Standard

Fluoxetine Succinamic Acid chemical structure

Fluoxetine Succinamic Acid

CAS: 1026723-45-4
Formula: C₂₁H₂₂F₃NO₄
MW: 409.4 g/mol

VQ-022681

Reference Standard

Fluoxetine-4-methyl-phenyl impurity

Fluoxetine-4-methyl-phenyl impurity

CAS: 1037491-99-8
Formula: C₁₈H₂₀F₃NO
MW: 323.35 g/mol

VQ-030809

Reference Standard

Flupentixol - Impurity D chemical structure

Flupentixol - Impurity D

CAS: 791521-96-5
Formula: C₂₅H₂₉F₃N₂O₂S
MW: 478.6 g/mol

VQ-030812

Reference Standard

Flupentixol decanoate IHS Impurity C chemical structure

Flupentixol decanoate IHS Impurity C

CAS: 30909-52-5
Formula: C₃₃H₄₅Cl₂F₃N₂O₂S
MW: 661.7 g/mol

VQ-030811

Reference Standard

Fluphenazine Tri-oxide Impurity

Fluphenazine Tri-oxide Impurity

CAS: 76005-63-5
Formula: C₂₂H₂₆F₃N₃O₄S
MW: 485.52 g/mol

In stock

Reference Standard

Flupirtine Dimer chemical structure

Flupirtine Dimer

CAS: 1417916-52-9
Formula: C₃₀H₃₂F₂N₈O₄
MW: 606.6 g/mol

VQ-048430

Reference Standard

Flupirtine Impurity B

Flupirtine Impurity B

CAS: 1942902-44-4
Formula: C₂₂H₂₂F₂N₄O₂
MW: 412.44 g/mol

VQ-037354

Reference Standard

Flupirtine Impurity C chemical structure

Flupirtine Impurity C

CAS: 21626-43-7
Formula: C₁₂H₁₂N₄O₂
MW: 244.25 g/mol

VQ-048429

Reference Standard

Flupirtine Maleate Impurity A

Flupirtine Maleate Impurity A

CAS: 1942902-42-2
Formula: C₁₉H₁₆F₂N₄O₂
MW: 370.35 g/mol

VQ-043178

Reference Standard

Fluprednidene Acetate Dermoxy chemical structure

Fluprednidene Acetate Dermoxy

CAS: 1524-34-1
Formula: C₂₄H₂₉FO₆
MW: 432.5 g/mol

VQ-022689

Reference Standard

Fluralaner 2-methylbenzoic acid impurity chemical structure

Fluralaner 2-methylbenzoic acid impurity

CAS: 864725-62-2
Formula: C₁₈H₁₂Cl₂F₃NO₃
MW: 418.2 g/mol

VQ-037361

Reference Standard

Fluralaner Acetophenone Impurity chemical structure

Fluralaner Acetophenone Impurity

CAS: 1422465-93-7
Formula: C₁₄H₁₅F₃N₂O₃
MW: 316.28 g/mol

VQ-025867

Reference Standard

Fluralaner Acid impurity chemical structure

Fluralaner Acid impurity

CAS: 864731-37-3
Formula: C₂₀H₁₅Cl₂F₃N₂O₄
MW: 475.2 g/mol

VQ-037360

Reference Standard

Fluralaner Enone Impurity chemical structure

Fluralaner Enone Impurity

CAS: 1422465-94-8
Formula: C₂₂H₁₆Cl₂F₆N₂O₃
MW: 541.3 g/mol

VQ-025866

Reference Standard

Fluralaner impurity 1 chemical structure

Fluralaner impurity 1

CAS: 1805814-99-6
Formula: C₂₂H₁₇Cl₂F₆N₃O₃
MW: 556.3 g/mol

VQ-048433

Reference Standard

Fluralaner Impurity 26 chemical structure

Fluralaner Impurity 26

CAS: 1187989-89-4
Formula: C₈H₅Cl₂F₃O
MW: 245.02 g/mol

VQ-048432

Reference Standard

Fluralaner Impurity 4 chemical structure

Fluralaner Impurity 4

CAS: 1183258-68-5
Formula: C₆H₁₀F₃N₃O₂
MW: 213.16 g/mol

VQ-048434

Reference Standard

Flurazepam Related Compound C chemical structure

Flurazepam Related Compound C

CAS: 19347-55-8
Formula: C₁₉H₂₃Cl₂FN₂O
MW: 385.3 g/mol

VQ-048437

Reference Standard

Flurbiprofen 2-Glyceryl Ester chemical structure

Flurbiprofen 2-Glyceryl Ester

CAS: 124635-86-5
Formula: C₁₈H₁₉FO₄
MW: 318.3 g/mol

VQ-037365

Reference Standard

Flurbiprofen Ethyl Ester chemical structure

Flurbiprofen Ethyl Ester

CAS: 64858-90-8
Formula: C₁₇H₁₇FO₂
MW: 272.31 g/mol

VQ-037371

Reference Standard

Flurbiprofen Glyceryl Ester chemical structure

Flurbiprofen Glyceryl Ester

CAS: 124635-84-3
Formula: C₁₈H₁₉FO₄
MW: 318.3 g/mol

VQ-030823

Reference Standard

Flurbiprofen Impurity 1

Flurbiprofen Impurity 1

CAS: 42771-81-3
Formula: C₂₀H₂₁FO₄
MW: 344.38 g/mol

VQ-025869

Reference Standard

Flurbiprofen rac-Menthyl Ester chemical structure

Flurbiprofen rac-Menthyl Ester

CAS: 908559-44-4
Formula: C₂₅H₃₁FO₂
MW: 382.5 g/mol

VQ-032427

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