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6-Methoxybenzothiazole-2-carboxylic acid

Also known as: 6-methoxy-1,3-benzothiazole-2-carboxylic acid, 6-methoxybenzo[d]thiazole-2-carboxylic acid, 6-methoxybenzo[d]thiazol-2-carboxylic acid, 2-benzothiazolecarboxylic acid, 6-methoxy-, 2-Benzothiazolecarboxylicacid,6-methoxy-(6CI,7CI,8CI,9CI), 6-Methoxy-benzothiazol-2-carbonsaeure, MFCD01119043, RARECHEM AL BO 0241, TIMTEC-BB SBB005598

6-Methoxybenzothiazole-2-carboxylic acid (CAS 946-13-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H7NO3S and a molecular weight of 209.222 g/mol. Key properties include a melting point of 119-120ºC, a boiling point of 412.3±37.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 203.2±26.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
946-13-4
Jingsj CID
J-1990000-6
Molecular Formula
C9H7NO3S
Molecular Weight
209.222 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point119-120ºC
Boiling Point412.3±37.0 °C at 760 mmHg
Density1.5±0.1 g/cm3
Flash Point203.2±26.5 °C
Exact Mass209.014664
PSA87.66000
LogP1.81
Vapor Pressure0.0±1.0 mmHg at 25°C
Refractive Index1.684

Frequently Asked Questions

What is the CAS number of 6-Methoxybenzothiazole-2-carboxylic acid?

The CAS number of 6-Methoxybenzothiazole-2-carboxylic acid is 946-13-4.

What are the molecular formula and molecular weight of 6-Methoxybenzothiazole-2-carboxylic acid?

6-Methoxybenzothiazole-2-carboxylic acid has molecular formula C9H7NO3S and molecular weight 209.222 g/mol.

What are the upstream and downstream products of 6-Methoxybenzothiazole-2-carboxylic acid?

For 6-Methoxybenzothiazole-2-carboxylic acid, Upstream Products: 6-Methoxybenzothiazole, Carbon dioxide, 6-Methoxybenzo[d]thiazole-2-carboxamide; Downstream Products: 6-hydroxybenzo[d]thiazole-2-carbonitrile, 2-Cyano-6-methoxybenzothiazole, D-Luciferin.

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

Last updated:

How to cite: Jingsj. "6-Methoxybenzothiazole-2-carboxylic acid (CAS 946-13-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1990000-6 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.