1,2,3,4-Tetrahydrocyclopenta[b]indole

Also known as: 1,2,3,4-Tetrahydrocyclopent[b]indole, 1,2,3,4-Tetrahydrocyclopent[b] indole, Cyclopent[b]indole, 1,2,3,4-tetrahydro-, 1,2,3,4-Tetrahydro-cyclopenta[b]indole, 1H,2H,3H,4H-cyclopenta[b]indole, 2,3-Trimethyleneindole, 2,3-dihydro-1H-cyclopent[b]indole, NSC 112674, MFCD00225387, Tetrahydrocyclopent[b]indole, 1,2,3,4-tetrahydrocyclopentindole

1,2,3,4-Tetrahydrocyclopenta[b]indole (CAS 2047-91-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H11N and a molecular weight of 157.212 g/mol. Key properties include a melting point of 100.5-105.5ºC(lit.), a boiling point of 300.9±11.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 130.4±11.9 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

2047-91-8

Jingsj CID

J-5228-8

Molecular Formula

C₁₁H₁₁N

Molecular Weight

157.212 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026