1,2,3,9-Tetrahydro-9-methyl-3-methylene-4H-carbazol-4-one

1,2,3,9-四氢-9-甲基-3-亚甲咔唑酮

Also known as: 9-Methyl-3-methylene-1,2,3,9-tetrahydro-4H-carbazol-4-one, 1,2,3,4-Tetrahydro-9-methyl-3-methylene-9H-carbazol-4-one, 9-Methyl-3-methylidene-1,2,3,9-tetrahydro-4H-carbazol-4-one, Ondansetron EP Impurity D, Ondansetron Related Compound D (USP), Ondansetron impurity D (PhEur), Ondansetron Impurity 4

1,2,3,9-Tetrahydro-9-methyl-3-methylene-4H-carbazol-4-one (CAS 99614-64-9) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C14H13NO and a molecular weight of 211.259 g/mol. It is also known as 9-Methyl-3-methylene-1,2,3,9-tetrahydro-4H-carbazol-4-one, 1,2,3,4-Tetrahydro-9-methyl-3-methylene-9H-carbazol-4-one and 9-Methyl-3-methylidene-1,2,3,9-tetrahydro-4H-carbazol-4-one. Key properties include a boiling point of 393.6±34.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 191.8±25.7 °C. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
99614-64-9
Jingsj CID
J-1512882-7
Molecular Formula
C14H13NO
Chinese Name
1,2,3,9-四氢-9-甲基-3-亚甲咔唑酮
Molecular Weight
211.259 g/mol
Category
Ketones
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point393.6±34.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point191.8±25.7 °C

GHS Safety & Compliance

Acute ToxicitySignal word: Danger

Frequently Asked Questions

What is the CAS number of 1,2,3,9-Tetrahydro-9-methyl-3-methylene-4H-carbazol-4-one?

The CAS number of 1,2,3,9-Tetrahydro-9-methyl-3-methylene-4H-carbazol-4-one is 99614-64-9.

What are the molecular formula and molecular weight of 1,2,3,9-Tetrahydro-9-methyl-3-methylene-4H-carbazol-4-one?

1,2,3,9-Tetrahydro-9-methyl-3-methylene-4H-carbazol-4-one has molecular formula C14H13NO and molecular weight 211.259 g/mol.

Is 1,2,3,9-Tetrahydro-9-methyl-3-methylene-4H-carbazol-4-one hazardous?

1,2,3,9-Tetrahydro-9-methyl-3-methylene-4H-carbazol-4-one has GHS signal word Danger.

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

Last updated:

How to cite: Jingsj. "1,2,3,9-Tetrahydro-9-methyl-3-methylene-4H-carbazol-4-one (CAS 99614-64-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1512882-7 (accessed 2026-10-22).

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