Methylthioninium Impurity A

亚甲蓝杂质A

Also known as: Azure B, 3-(Dimethylamino)-7-(methylamino)phenothiazin-5-ylium chloride, N,N-Dimethyl-7-(methylamino)-3H-phenothiazin-3-iminium chloride, N-Methyl-N-(7-(methylamino)-3H-phenothiazin-3-ylidene)methanaminium chloride, Methylene blue impurity A, Methylthioninium chloride EP impurity A

Methylthioninium Impurity A (CAS 1231958-32-9) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C16H18N3S+ and a molecular weight of 284.39922 g/mol. It is also known as Azure B, 3-(Dimethylamino)-7-(methylamino)phenothiazin-5-ylium chloride and N,N-Dimethyl-7-(methylamino)-3H-phenothiazin-3-iminium chloride. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1231958-32-9
Jingsj CID: J-1829297-8
Molecular Formula: C₁₆H₁₈N₃S
Chinese Name: 亚甲蓝杂质A
Molecular Weight: 284.39922 g/mol
Category: Organic Compounds
Last updated: 8/21/2026

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Frequently Asked Questions

What is the CAS number of Methylthioninium Impurity A?

The CAS number of Methylthioninium Impurity A is 1231958-32-9.

What are the molecular formula and molecular weight of Methylthioninium Impurity A?

Methylthioninium Impurity A has molecular formula C16H18N3S+ and molecular weight 284.39922 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "Methylthioninium Impurity A (CAS 1231958-32-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1829297-8 (accessed 2026-10-25).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.