2-Mercaptonicotinic acid

2-巯基烟酸

Also known as: 2-Mercapto-3-pyridinecarboxylic acid, 2-Mercaptopyridine-3-carboxylic acid, 2-Sulfanylnicotinic acid, 2-Thionicotinic acid, 2-Thioxo-1,2-dihydropyridine-3-carboxylic acid, 1,2-dihydro-2-thioxo-3-pyridinecarboxylic acid, 2-sulfanylidene-1H-pyridine-3-carboxylic acid, MFCD00010102

2-Mercaptonicotinic acid (CAS 38521-46-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H5NO2S and a molecular weight of 155.174 g/mol. It is also known as 2-Mercapto-3-pyridinecarboxylic acid, 2-Mercaptopyridine-3-carboxylic acid and 2-Sulfanylnicotinic acid. Key properties include a melting point of 263-265 °C(lit.), a boiling point of 337.6±27.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 158.0±23.7 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
38521-46-9
Jingsj CID
J-49511-0
Molecular Formula
C6H5NO2S
Chinese Name
2-巯基烟酸
Molecular Weight
155.174 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point263-265 °C(lit.)
Boiling Point337.6±27.0 °C at 760 mmHg
Density1.4±0.1 g/cm3
Flash Point158.0±23.7 °C

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 2-Mercaptonicotinic acid?

The CAS number of 2-Mercaptonicotinic acid is 38521-46-9.

What are the molecular formula and molecular weight of 2-Mercaptonicotinic acid?

2-Mercaptonicotinic acid has molecular formula C6H5NO2S and molecular weight 155.174 g/mol.

Is 2-Mercaptonicotinic acid hazardous?

2-Mercaptonicotinic acid has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "2-Mercaptonicotinic acid (CAS 38521-46-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-49511-0 (accessed 2026-10-24).

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