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2,3,5,6-tetramethylpyridine

Also known as: Pyridine,2,3,5,6-tetramethyl, 2,3,5,6-Tetramethyl-pyridin, 2,3,5,6-tetramethyl-pyridine, EINECS 223-149-5

2,3,5,6-tetramethylpyridine (CAS 3748-84-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H13N and a molecular weight of 135.20600 g/mol. Key properties include a boiling point of 197.5ºC at 760mmHg, a density of 0.915g/cm3 and a flash point of 71.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
3748-84-3
Jingsj CID
J-1522792-6
Molecular Formula
C9H13N
Molecular Weight
135.20600 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point197.5ºC at 760mmHg
Density0.915g/cm3
Flash Point71.8ºC
Exact Mass135.10500
PSA12.89000
LogP2.31520
Refractive Index1.502

Customs & Trade Information

HS Code2933399090
Summary2933399090. 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 2,3,5,6-tetramethylpyridine?

The CAS number of 2,3,5,6-tetramethylpyridine is 3748-84-3.

What are the molecular formula and molecular weight of 2,3,5,6-tetramethylpyridine?

2,3,5,6-tetramethylpyridine has molecular formula C9H13N and molecular weight 135.20600 g/mol.

What are the upstream and downstream products of 2,3,5,6-tetramethylpyridine?

For 2,3,5,6-tetramethylpyridine, Upstream Products: 2,3,5-Trimethylpyridine, iodomethane, 3,5-Dimethylpyridine; Downstream Products: 2,5-Dimethyl-3-pyridinecarboxylic acid.

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

Last updated:

How to cite: Jingsj. "2,3,5,6-tetramethylpyridine (CAS 3748-84-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1522792-6 (accessed 2026-11-09).

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