3H-Pyrimido[5,4-b]indol-4(5H)-one

3,5-二氢-4H-嘧啶并[5,4-b]吲哚-4-酮

Also known as: 1,5-Dihydro-4H-pyrimido[5,4-b]indol-4-one, 4H-Pyrimido[5,4-b]indol-4-one, 3,5-dihydro-, 1,5-dihydropyrimido[5,4-b]indol-4-one, 2,9-Dihydro-2,4,9-triaza-fluoren-1-one, 3,5-dihydro-4H-pyrimido[5,4-b]indol-4-one

3H-Pyrimido[5,4-b]indol-4(5H)-one (CAS 61553-71-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H7N3O and a molecular weight of 185.182 g/mol. It is also known as 1,5-Dihydro-4H-pyrimido[5,4-b]indol-4-one, 4H-Pyrimido[5,4-b]indol-4-one, 3,5-dihydro- and 1,5-dihydropyrimido[5,4-b]indol-4-one. Key properties include a boiling point of 465.1±37.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 235.1±26.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
61553-71-7
Jingsj CID
J-1127237-3
Molecular Formula
C10H7N3O
Chinese Name
3,5-二氢-4H-嘧啶并[5,4-b]吲哚-4-酮
Molecular Weight
185.182 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point465.1±37.0 °C at 760 mmHg
Density1.6±0.1 g/cm3
Flash Point235.1±26.5 °C

Frequently Asked Questions

What is the CAS number of 3H-Pyrimido[5,4-b]indol-4(5H)-one?

The CAS number of 3H-Pyrimido[5,4-b]indol-4(5H)-one is 61553-71-7.

What are the molecular formula and molecular weight of 3H-Pyrimido[5,4-b]indol-4(5H)-one?

3H-Pyrimido[5,4-b]indol-4(5H)-one has molecular formula C10H7N3O and molecular weight 185.182 g/mol.

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

Last updated:

How to cite: Jingsj. "3H-Pyrimido[5,4-b]indol-4(5H)-one (CAS 61553-71-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1127237-3 (accessed 2026-10-24).

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