4-hydroxy-2,6-dimethylnicotinic acid

Also known as: 4-hydroxy-2,6-dimethylpyridine-3-carboxylic acid, 2,6-dimethyl-4-hydroxynicotinic acid, 2,6-dimethyl-4-oxo-1,4-dihydro-3-pyridinecarboxylic acid

4-hydroxy-2,6-dimethylnicotinic acid (CAS 33259-21-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H9NO3 and a molecular weight of 167.16200 g/mol. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 33259-21-1
Jingsj CID: J-1487872-9
Molecular Formula: C₈H₉NO₃
Molecular Weight: 167.16200 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Exact Mass	167.05800
PSA	70.16000
LogP	0.68990

Customs & Trade Information

HS Code	2933399090
Summary	2933399090. other compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 4-hydroxy-2,6-dimethylnicotinic acid?

The CAS number of 4-hydroxy-2,6-dimethylnicotinic acid is 33259-21-1.

What are the molecular formula and molecular weight of 4-hydroxy-2,6-dimethylnicotinic acid?

4-hydroxy-2,6-dimethylnicotinic acid has molecular formula C8H9NO3 and molecular weight 167.16200 g/mol.

What are the upstream and downstream products of 4-hydroxy-2,6-dimethylnicotinic acid?

For 4-hydroxy-2,6-dimethylnicotinic acid, Upstream Products: Ethyl (2Z)-3-amino-2-butenoate, ethyl 4-chloro-2,6-dimethylnicotinate.

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. "4-hydroxy-2,6-dimethylnicotinic acid (CAS 33259-21-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1487872-9 (accessed 2026-11-09).

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