6-Amino-1H-pyrazolo[3,4-d]pyrimidin-4(7H)-one

Also known as: 4-Hydroxy-6-aminopyrazolo[3,4-d]pyrimidine, 4-Oxo-6-aminopyrazolo[3,4-d]pyrimidine, 6-Amino-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one, 6-Amino-1H-pyrazolo[3,4-d]pyrimidin-4-ol, 8-Aza-7-deazaguanine, HAPP, NSC 760

6-Amino-1H-pyrazolo[3,4-d]pyrimidin-4(7H)-one (CAS 2537-04-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H5N5O and a molecular weight of 151.12600 g/mol. Key properties include a boiling point of 351.9ºC at 760 mmHg, a density of 2.19g/cm3 and a flash point of 166.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 2537-04-4
Jingsj CID: J-1506066-9
Molecular Formula: C₅H₅N₅O
Molecular Weight: 151.12600 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	351.9ºC at 760 mmHg
Density	2.19g/cm3
Flash Point	166.6ºC
Exact Mass	151.04900
PSA	100.45000
Vapor Pressure	3.98E-05mmHg at 25°C
Refractive Index	2.047

Frequently Asked Questions

What is the CAS number of 6-Amino-1H-pyrazolo[3,4-d]pyrimidin-4(7H)-one?

The CAS number of 6-Amino-1H-pyrazolo[3,4-d]pyrimidin-4(7H)-one is 2537-04-4.

What are the molecular formula and molecular weight of 6-Amino-1H-pyrazolo[3,4-d]pyrimidin-4(7H)-one?

6-Amino-1H-pyrazolo[3,4-d]pyrimidin-4(7H)-one has molecular formula C5H5N5O and molecular weight 151.12600 g/mol.

What are the upstream and downstream products of 6-Amino-1H-pyrazolo[3,4-d]pyrimidin-4(7H)-one?

For 6-Amino-1H-pyrazolo[3,4-d]pyrimidin-4(7H)-one, Upstream Products: 4-Chloro-1H-pyrazolo[3,4-d]pyrimidin-6-amine, 6-Chloro-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one, Oxipurinol.

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. "6-Amino-1H-pyrazolo[3,4-d]pyrimidin-4(7H)-one (CAS 2537-04-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1506066-9 (accessed 2026-11-09).

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