3,6,6-Trimethyl-4-oxo-4,5,6,7-tetrahydro-1H-indole-2-carboxylic acid

Also known as: 1H-Indole-2-carboxylic acid, 4,5,6,7-tetrahydro-3,6,6-trimethyl-4-oxo-, 3,6,6-Trimethyl-4-oxo-4,5,6,7-tetrahydro-indole-2-carboxylic acid, 3,6,6-trimethyl-4-oxo-5,6,7-trihydroindole-2-carboxylic acid

3,6,6-Trimethyl-4-oxo-4,5,6,7-tetrahydro-1H-indole-2-carboxylic acid (CAS 129689-88-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C12H15NO3 and a molecular weight of 221.25200 g/mol. Key properties include a boiling point of 454.6ºC at 760mmHg and a flash point of 228.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 129689-88-9
Jingsj CID: J-1066650-9
Molecular Formula: C₁₂H₁₅NO₃
Molecular Weight: 221.25200 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	454.6ºC at 760mmHg
Flash Point	228.7ºC
Exact Mass	221.10500
PSA	70.16000
LogP	2.17640
Vapor Pressure	4.71E-09mmHg at 25°C
Refractive Index	1.572

Customs & Trade Information

HS Code	2933990090
Summary	2933990090. 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 3,6,6-Trimethyl-4-oxo-4,5,6,7-tetrahydro-1H-indole-2-carboxylic acid?

The CAS number of 3,6,6-Trimethyl-4-oxo-4,5,6,7-tetrahydro-1H-indole-2-carboxylic acid is 129689-88-9.

What are the molecular formula and molecular weight of 3,6,6-Trimethyl-4-oxo-4,5,6,7-tetrahydro-1H-indole-2-carboxylic acid?

3,6,6-Trimethyl-4-oxo-4,5,6,7-tetrahydro-1H-indole-2-carboxylic acid has molecular formula C12H15NO3 and molecular weight 221.25200 g/mol.

What are the upstream and downstream products of 3,6,6-Trimethyl-4-oxo-4,5,6,7-tetrahydro-1H-indole-2-carboxylic acid?

For 3,6,6-Trimethyl-4-oxo-4,5,6,7-tetrahydro-1H-indole-2-carboxylic acid, Upstream Products: ethyl 3,6,6-trimethyl-4-oxo-4,5,6,7-tetrahydro-1H-indole-2-carboxylate; Downstream Products: 3,6,6-trimethyl-6,7-dihydro-1H-indol-4(5H)-one.

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. "3,6,6-Trimethyl-4-oxo-4,5,6,7-tetrahydro-1H-indole-2-carboxylic acid (CAS 129689-88-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1066650-9 (accessed 2026-11-09).

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