5-Ethyl-1H-indole-2-carboxylic acid

Also known as: 5-Ethylindole-2-carboxylic acid, 5-Aethyl-indol-2-carbonsaeure, 5-ethyl-1H-indole-2-carboxylic acid

5-Ethyl-1H-indole-2-carboxylic acid (CAS 37033-93-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H11NO2 and a molecular weight of 189.21100 g/mol. Key properties include a melting point of 181-185ºC, a boiling point of 422.9ºC at 760 mmHg, a density of 1.285 g/cm3 and a flash point of 209.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 37033-93-5
Jingsj CID: J-30073-2
Molecular Formula: C₁₁H₁₁NO₂
Molecular Weight: 189.21100 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	181-185ºC
Boiling Point	422.9ºC at 760 mmHg
Density	1.285 g/cm3
Flash Point	209.6ºC
Exact Mass	189.07900
PSA	53.09000
LogP	2.42850
Refractive Index	1.67

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 5-Ethyl-1H-indole-2-carboxylic acid?

The CAS number of 5-Ethyl-1H-indole-2-carboxylic acid is 37033-93-5.

What are the molecular formula and molecular weight of 5-Ethyl-1H-indole-2-carboxylic acid?

5-Ethyl-1H-indole-2-carboxylic acid has molecular formula C11H11NO2 and molecular weight 189.21100 g/mol.

What are the upstream and downstream products of 5-Ethyl-1H-indole-2-carboxylic acid?

For 5-Ethyl-1H-indole-2-carboxylic acid, Upstream Products: Ethyl 5-ethyl-1H-indole-2-carboxylate, Pyruvic acid, 4-Ethylaniline; Downstream Products: 5-Ethylindole.

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-Ethyl-1H-indole-2-carboxylic acid (CAS 37033-93-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-30073-2 (accessed 2026-11-09).

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