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Impurities & Reference Standards

Pharmacopeial Impurities (EP / USP / BP)

578 pharmacopeial impurities (ep / usp / bp) with CAS numbers, structures and specifications — batch COA and GHS SDS supplied.

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427in stock

COA + SDSwith every lot

Reference Standard

Fluorometholone EP Impurity F

Fluorometholone EP Impurity F

CAS: 2061-13-4
Formula: C₂₂H₂₉FO₃
MW: 358.48 g/mol

VQ-037327

Reference Standard

Fluorouracil EP Impurity B chemical structure

Fluorouracil EP Impurity B

CAS: 496-76-4
Formula: C₄H₄N₂O₃
MW: 128.09 g/mol

VQ-022678

Reference Standard

Fluorouracil EP Impurity D chemical structure

Fluorouracil EP Impurity D

CAS: 6623-81-0
Formula: C₅H₆N₂O₃
MW: 142.11 g/mol

VQ-022680

Reference Standard

Fluoxetine EP Impurity A (Freebase) chemical structure

Fluoxetine EP Impurity A (Freebase)

CAS: 42142-52-9
Formula: C₁₀H₁₅NO
MW: 165.23 g/mol

In stock

Reference Standard

Fluoxetine EP Impurity A (Hydrochloride) chemical structure

Fluoxetine EP Impurity A (Hydrochloride)

CAS: 57256-92-5
Formula: C₁₀H₁₆ClNO
MW: 201.69 g/mol

VQ-006395

Reference Standard

Fluoxetine EP Impurity B (Freebase) chemical structure

Fluoxetine EP Impurity B (Freebase)

CAS: 23580-89-4
Formula: C₁₀H₁₅N
MW: 149.23 g/mol

VQ-006396

Reference Standard

Fluoxetine EP Impurity B (Hydrochloride) chemical structure

Fluoxetine EP Impurity B (Hydrochloride)

CAS: 30684-07-2
Formula: C₁₀H₁₆ClN
MW: 185.69 g/mol

In stock

Reference Standard

Fluoxetine EP Impurity C chemical structure

Fluoxetine EP Impurity C

CAS: 56161-72-9
Formula: C₁₇H₁₈F₃NO
MW: 309.33 g/mol

In stock

Reference Standard

Fluoxetine EP Impurity C (Hydrochloride) chemical structure

Fluoxetine EP Impurity C (Hydrochloride)

CAS: 79088-29-2
Formula: C₁₇H₁₉ClF₃NO
MW: 345.8 g/mol

VQ-006399

Reference Standard

Flupentixol EP Impurity A chemical structure

Flupentixol EP Impurity A

CAS: 2340-57-0
Formula: C₁₉H₂₀F₃NOS
MW: 367.4 g/mol

VQ-044806

Reference Standard

Flupentixol EP Impurity C chemical structure

Flupentixol EP Impurity C

CAS: 22365-08-8
Formula: C₂₁H₂₁F₃N₂S
MW: 390.5 g/mol

VQ-037344

Reference Standard

Flupentixol EP Impurity F chemical structure

Flupentixol EP Impurity F

CAS: 756419-50-8
Formula: C₂₃H₂₅F₃N₂OS
MW: 434.5 g/mol

VQ-025853

Reference Standard

Flupentixol EP Impurity G chemical structure

Flupentixol EP Impurity G

CAS: 1693-28-3
Formula: C₁₄H₇F₃OS
MW: 280.27 g/mol

VQ-025852

Reference Standard

Fluphenazine Decanoate EP Impurity A chemical structure

Fluphenazine Decanoate EP Impurity A

CAS: 1674-76-6
Formula: C₂₂H₂₆F₃N₃O₂S
MW: 453.5 g/mol

VQ-025854

Reference Standard

Fluphenazine Decanoate EP Impurity C chemical structure

Fluphenazine Decanoate EP Impurity C

CAS: 2746-81-8
Formula: C₂₉H₃₈F₃N₃O₂S
MW: 549.7 g/mol

VQ-025855

Reference Standard

Fluphenazine Decanoate EP Impurity C (DiHCl) chemical structure

Fluphenazine Decanoate EP Impurity C (DiHCl)

CAS: 3105-68-8
Formula: C₂₉H₄₀Cl₂F₃N₃O₂S
MW: 622.6 g/mol

VQ-043177

Reference Standard

Fluphenazine Decanoate EP Impurity D chemical structure

Fluphenazine Decanoate EP Impurity D

CAS: 97671-70-0
Formula: C₃₀H₄₀F₃N₃O₂S
MW: 563.7 g/mol

VQ-025857

Reference Standard

Fluphenazine Decanoate EP Impurity F chemical structure

Fluphenazine Decanoate EP Impurity F

CAS: 13220-06-9
Formula: C₃₃H₄₆F₃N₃O₂S
MW: 605.8 g/mol

VQ-030814

Reference Standard

Fluphenazine Decanoate EP Impurity G chemical structure

Fluphenazine Decanoate EP Impurity G

CAS: 61555-18-8
Formula: C₃₄H₄₈F₃N₃O₂S
MW: 619.8 g/mol

VQ-025856

Reference Standard

Fluphenazine Dihydrochloride EP Impurity C chemical structure

Fluphenazine Dihydrochloride EP Impurity C

CAS: 2518011-27-1
Formula: C₃₅H₃₂F₆N₄OS₂
MW: 702.8 g/mol

VQ-025859

Reference Standard

Fluphenazine Dihydrochloride EP Impurity D chemical structure

Fluphenazine Dihydrochloride EP Impurity D

CAS: 2376-89-8
Formula: C₃₆H₃₄F₆N₄S₂
MW: 700.8 g/mol

VQ-025864

Reference Standard

Fluphenazine EP Impurity B chemical structure

Fluphenazine EP Impurity B

CAS: 1476-79-5
Formula: C₂₂H₂₆F₃N₃O₃S
MW: 469.5 g/mol

VQ-025858

Reference Standard

Fluphenazine EP Impurity F

Fluphenazine EP Impurity F

CAS: 2725395-34-4
Formula: C₃₁H₄₄F₃N₅O₃S
MW: 623.78 g/mol

VQ-025861

Reference Standard

Flurazepam EP Impurity A chemical structure

Flurazepam EP Impurity A

CAS: 36105-18-7
Formula: C₁₉H₂₂ClFN₂O
MW: 348.8 g/mol

VQ-035507

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