Impurity reference standards

Almotriptan impurity standards

For Almotriptan, the Zemixal catalogue holds 14 impurity and reference standards that support release testing, stability programmes and regulatory dossiers. Counted by type, there are 4 pharmacopoeial impurities, 2 metabolites or hydroxylated analogues and 1 degradation product.

14reference materials

4pharmacopoeial

2metabolites

1degradants

Each lot ships with a certificate of analysis, and characterisation data such as 1H-NMR, mass spectrum and HPLC purity can be shared before you order. Laboratories use them to validate related-substance methods, set specification limits under ICH Q3A and Q3B, and identify unknown peaks in stability samples.

By impurity type

Pharmacopoeial4EP, USP, BP or JP named impurities

Metabolites2Hydroxy, desmethyl and conjugated forms

Degradants1N-oxides, dimers, lactones and breakdown products

Counts are based on product names. One compound can fall into more than one type.

All Almotriptan reference materials

1–14 of 14 standards

1-((4-Aminobenzenemethane)sulfonyl)pyrrolidine

CAS: 334981-10-1
Formula: C₁₁H₁₆N₂O₂S
MW: 240.32 g/mol

ZX-020345

1-((4-Nitrobenzyl)sulfonyl)pyrrolidine

CAS: 340041-91-0
Formula: C₁₁H₁₄N₂O₄S
MW: 270.31 g/mol

ZX-027928

2-Hydroxy Almotriptan

CAS: 1309457-19-9
Formula: C₁₇H₂₅N₃O₃S
MW: 351.5 g/mol

ZX-019818

4-(Pyrrolidino Sulfonyl Methyl) phenyl Hydrazine Hydrochloride

CAS: 334981-11-2
Formula: C₁₁H₁₈ClN₃O₂S
MW: 291.8 g/mol

ZX-020553

Almotriptan

CAS: 154323-57-6
Formula: C₁₇H₂₅N₃O₂S
MW: 335.5 g/mol

ZX-020551

Almotriptan Dimer Impurity

CAS: 1330166-13-6
Formula: C₃₀H₄₁N₅O₂S
MW: 535.7 g/mol

ZX-023207

Almotriptan EP Impurity A

CAS: 334981-12-3
Formula: C₁₆H₂₃N₃O₂S
MW: 321.4 g/mol

ZX-019819

Almotriptan EP Impurity C

CAS: 1018676-02-2
Formula: C₁₈H₂₇N₃O₃S
MW: 365.5 g/mol

ZX-019820

Almotriptan EP Impurity D (Fumarate Salt)

CAS: 1246860-65-0
Formula: C₃₄H₄₆N₆O₈S₂
MW: 730.9 g/mol

ZX-027927

Almotriptan EP impurity F TFA salt

CAS: 2749821-93-8
Formula: C₁₉H₂₉N₃O₂S
MW: 363.5 g/mol

ZX-023096

Almotriptan Maleate

CAS: 181183-52-8
Formula: C₂₁H₃₁N₃O₇S
MW: 469.6 g/mol

ZX-020552

Almotriptan Methyl Tetrahydro Indole Impurity

CAS: 334981-31-6
Formula: C₁₇H₂₃N₃O₂S
MW: 333.5 g/mol

ZX-023208

Didesmethyl Almotriptan

CAS: 181178-24-5
Formula: C₁₅H₂₁N₃O₂S
MW: 307.4 g/mol

ZX-020554

Spiroalmotriptan

CAS: 1309457-18-8
Formula: C₁₇H₂₅N₃O₃S
MW: 351.5 g/mol

ZX-019817

Questions

Almotriptan impurities, answered

What Almotriptan reference materials are available?

The catalogue currently lists 14 compounds for Almotriptan, including 4 pharmacopoeial impurities, 2 metabolites or hydroxylated analogues and 1 degradation product. Each product page shows the CAS number where one is assigned, the structure, formula and molecular weight.

What documents come with a Almotriptan 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 Almotriptan 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.