5-Methylnicotinic acid

Also known as: 5-Methyl-3-pyridinecarboxylic acid, 5-Methylpyridine-3-carboxylic acid, 5-METHYL-3-PYRIDINECARBOXYLIC ACID, 5-METHYLNICOTINIC ACID, 5-METHYLPYRIDINE-3-CARBOXYLIC ACID, 5-METHYPYRIDINE-3-CARBOXYLIC ACID, 5-Methylnicotic acid, MFCD00829036

5-Methylnicotinic acid (CAS 3222-49-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H7NO2 and a molecular weight of 137.136 g/mol. Key properties include a melting point of 210-212°C, a boiling point of 303.9±22.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 137.6±22.3 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 3222-49-9
Jingsj CID: J-19997-3
Molecular Formula: C₇H₇NO₂
Molecular Weight: 137.136 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	210-212°C
Boiling Point	303.9±22.0 °C at 760 mmHg
Density	1.2±0.1 g/cm3
Flash Point	137.6±22.3 °C
Exact Mass	137.047684
PSA	50.19000
LogP	0.61
Vapor Pressure	0.0±0.7 mmHg at 25°C
Refractive Index	1.561

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 5-Methylnicotinic acid?

The CAS number of 5-Methylnicotinic acid is 3222-49-9.

What are the molecular formula and molecular weight of 5-Methylnicotinic acid?

5-Methylnicotinic acid has molecular formula C7H7NO2 and molecular weight 137.136 g/mol.

Is 5-Methylnicotinic acid hazardous?

5-Methylnicotinic acid has GHS signal word Warning.

What are the upstream and downstream products of 5-Methylnicotinic acid?

For 5-Methylnicotinic acid, Upstream Products: 3,5-Dimethylpyridine, 1-(5-methylpyridin-3-yl)ethanone, 3-Methylquinoline; Downstream Products: Methyl 5-fluoropyridine-3-carboxylate, 3-Fluoro-5-methylpyridine, 3-Amino-5-methylpyridine.

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

Last updated: 8/21/2026

How to cite: Jingsj. "5-Methylnicotinic acid (CAS 3222-49-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-19997-3 (accessed 2026-11-09).

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