6,7-dihydro-5H-cyclopenta[d]pyrimidin-2-amine

6,7-二氢-5H-环戊[d]嘧啶-2-胺

Also known as: 2-Amino-6,7-dihydro-5H-cyclopenta[d]pyrimidine, 5H-Cyclopentapyrimidin-2-amine, 6,7-dihydro- (9CI), 2-Amino-4,5-trimethylenpyrimidin, 6,7-dihydro-5H-cyclopenta[d]pyrimidin-2-ylamine, 6,7-dihydro-5H-cyclopentapyrimidin-2-ylamine

6,7-dihydro-5H-cyclopenta[d]pyrimidin-2-amine (CAS 108990-72-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H9N3 and a molecular weight of 135.16600 g/mol. It is also known as 2-Amino-6,7-dihydro-5H-cyclopenta[d]pyrimidine, 5H-Cyclopentapyrimidin-2-amine, 6,7-dihydro- (9CI) and 2-Amino-4,5-trimethylenpyrimidin. Key properties include a boiling point of 349.1ºC at 760 mmHg, a density of 1.26g/cm3 and a flash point of 191.9ºC. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
108990-72-3
Jingsj CID
J-1481351-3
Molecular Formula
C7H9N3
Chinese Name
6,7-二氢-5H-环戊[d]嘧啶-2-胺
Molecular Weight
135.16600 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point349.1ºC at 760 mmHg
Density1.26g/cm3
Flash Point191.9ºC

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 6,7-dihydro-5H-cyclopenta[d]pyrimidin-2-amine?

The CAS number of 6,7-dihydro-5H-cyclopenta[d]pyrimidin-2-amine is 108990-72-3.

What are the molecular formula and molecular weight of 6,7-dihydro-5H-cyclopenta[d]pyrimidin-2-amine?

6,7-dihydro-5H-cyclopenta[d]pyrimidin-2-amine has molecular formula C7H9N3 and molecular weight 135.16600 g/mol.

Is 6,7-dihydro-5H-cyclopenta[d]pyrimidin-2-amine hazardous?

6,7-dihydro-5H-cyclopenta[d]pyrimidin-2-amine has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "6,7-dihydro-5H-cyclopenta[d]pyrimidin-2-amine (CAS 108990-72-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1481351-3 (accessed 2026-10-25).

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