2,3,5-Trimethyl-1H-indole

2,3,5-三甲基-1H-吲哚

Also known as: 2,3,5-Trimethylindole, 1H-Indole, 2,3,5-trimethyl-, INDOLE,2,3,5-TRIMETHYL

2,3,5-Trimethyl-1H-indole (CAS 21296-92-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H13N and a molecular weight of 159.22800 g/mol. It is also known as 2,3,5-Trimethylindole, 1H-Indole, 2,3,5-trimethyl- and INDOLE,2,3,5-TRIMETHYL. Key properties include a melting point of 121.5ºC, a boiling point of 297.4ºC at 760 mmHg, a density of 1.056g/cm3 and a flash point of 126.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
21296-92-4
Jingsj CID
J-1447198-4
Molecular Formula
C11H13N
Chinese Name
2,3,5-三甲基-1H-吲哚
Molecular Weight
159.22800 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point121.5ºC
Boiling Point297.4ºC at 760 mmHg
Density1.056g/cm3
Flash Point126.6ºC
Exact Mass159.10500
PSA15.79000
LogP3.09310
Vapor Pressure0.0024mmHg at 25°C
Refractive Index1.62

Customs & Trade Information

HS Code2933990090
Summary2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. 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-Trimethyl-1H-indole?

The CAS number of 2,3,5-Trimethyl-1H-indole is 21296-92-4.

What are the molecular formula and molecular weight of 2,3,5-Trimethyl-1H-indole?

2,3,5-Trimethyl-1H-indole has molecular formula C11H13N and molecular weight 159.22800 g/mol.

What are the upstream and downstream products of 2,3,5-Trimethyl-1H-indole?

For 2,3,5-Trimethyl-1H-indole, Upstream Products: p-Toluidine, 2,3-Butanediol, 4-Methylphenylhydrazine hydrochloride.

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

Last updated:

How to cite: Jingsj. "2,3,5-Trimethyl-1H-indole (CAS 21296-92-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1447198-4 (accessed 2026-10-28).

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