Impurity reference standards

Fezolinetant impurity standards

This page brings together 10 Fezolinetant related compounds that analytical teams use to identify, quantify and control impurities in the active ingredient and the finished dosage form. Most entries are process-related impurities, synthesis intermediates and isomers.

10reference materials

Every standard comes with a certificate of analysis. Structure confirmation data, typically NMR, MS and chromatographic purity, is available on request. They are bought for system suitability, peak identification, quantitation against limits and the impurity justification sections of regulatory submissions.

All Fezolinetant reference materials

1–10 of 10 standards

(3R)-4-(4-Fluorobenzoyl)-3-methyl-2-piperazinone

CAS: 1892599-91-5
Formula: C₁₂H₁₃FN₂O₂
MW: 236.24 g/mol

ZX-024737

(R)-3-Methyl-5-(8-methyl-5,6,7,8-tetrahydro-[1,2,4]triazolo[4,3-a]pyrazin-3-yl)-1,2,4-thiadiazole

CAS: 1429558-08-6
Formula: C₉H₁₂N₆S
MW: 236.3 g/mol

ZX-021674

(S)-3-Methylpiperazin-2-one

CAS: 78551-38-9
Formula: C₅H₁₀N₂O
MW: 114.15 g/mol

ZX-031550

(S)-Fezolinetant

CAS: 2650136-83-5
Formula: C₁₆H₁₅FN₆OS
MW: 358.4 g/mol

ZX-024735

3-Methyl-1,2,4-thiadiazole-5-carbohydrazide

CAS: 1375066-73-1
Formula: C₄H₆N₄OS
MW: 158.18 g/mol

ZX-024734

Ethyl 3-methyl-1,2,4-thiadiazole-5-carboxylate

CAS: 76162-56-6
Formula: C₆H₈N₂O₂S
MW: 172.21 g/mol

ZX-029493

Fezolinetant

CAS: 1629229-37-3
Formula: C₁₆H₁₅FN₆OS
MW: 358.4 g/mol

ZX-024733

Fezolinetant 2,4-dimethoxybenzyl Deoxy Impurity

CAS: 1429558-79-1
Formula: C₁₈H₂₂N₆O₂S
MW: 386.5 g/mol

ZX-024736

Fezolinetant Impurity 10

CAS: 922178-61-8
Formula: C₅H₁₀N₂O
MW: 114.15 g/mol

ZX-047842

Fezolinetant Piperazinone Impurity (R-Isomer)

CAS: 1383146-20-0
Formula: C₁₄H₂₀N₂O₃
MW: 264.32 g/mol

ZX-029492

Questions

Fezolinetant impurities, answered

What Fezolinetant reference materials are available?

The catalogue currently lists 10 compounds for Fezolinetant. Each product page shows the CAS number where one is assigned, the structure, formula and molecular weight.

What documents come with a Fezolinetant impurity standard?

A certificate of analysis travels with every lot. On request we share the characterisation set, usually 1H-NMR, mass spectrum, HPLC purity and IR, and for some materials TGA or water content. Ask for the data before ordering if your QA team needs to review it.

Can Zemixal make a Fezolinetant impurity that is not listed?

Often yes. Send the structure, name or CAS number with the quantity you need and our sourcing team checks custom synthesis options, usually from 10 mg up to gram scale, with a quoted lead time.