4-Amino-6-mercaptopyrazolo[3,4-d]pyrimidine

Also known as: 4-Aminopyrazolo[3,4-d]pyrimidine-6-thiol, 4-Amino-1,2-dihydro-6H-pyrazolo[3,4-d]pyrimidine-6-thione, 4-Amino-1H-pyrazolo[3,4-d]pyrimidine-6-thiol, 4-Amino-6-mercapto-1H-pyrazolo[3,4-d]pyrimidine, 4-Amino-1,5-dihydro-6H-pyrazolo[3,4-d]pyrimidine-6-thione, NSC 7790, MFCD00005690, EINECS 245-872-5, TIMTEC-BB SBB003883

4-Amino-6-mercaptopyrazolo[3,4-d]pyrimidine (CAS 23771-52-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H5N5S and a molecular weight of 167.19200 g/mol. Key properties include a melting point of >300 °C(lit.), a boiling point of 348.2ºC at 760 mmHg, a density of 2.08 g/cm3 and a flash point of 164.4ºC. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.

CAS No.: 23771-52-0
Jingsj CID: J-17036-5
Molecular Formula: C₅H₅N₅S
Molecular Weight: 167.19200 g/mol
Category: Pharma Intermediates
Last updated: 11/3/2026

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Physicochemical Properties

Melting Point	>300 °C(lit.)
Boiling Point	348.2ºC at 760 mmHg
Density	2.08 g/cm3
Flash Point	164.4ºC
Exact Mass	167.02700
PSA	119.28000
LogP	0.80500
Vapor Pressure	5.1E-05mmHg at 25°C
Refractive Index	2.07

Customs & Trade Information

HS Code	2933990090
Summary	2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 4-Amino-6-mercaptopyrazolo[3,4-d]pyrimidine?

The CAS number of 4-Amino-6-mercaptopyrazolo[3,4-d]pyrimidine is 23771-52-0.

What are the molecular formula and molecular weight of 4-Amino-6-mercaptopyrazolo[3,4-d]pyrimidine?

4-Amino-6-mercaptopyrazolo[3,4-d]pyrimidine has molecular formula C5H5N5S and molecular weight 167.19200 g/mol.

What are the upstream and downstream products of 4-Amino-6-mercaptopyrazolo[3,4-d]pyrimidine?

For 4-Amino-6-mercaptopyrazolo[3,4-d]pyrimidine, Upstream Products: 1H-Pyrazolo[3,4-d]pyrimidine-4,6-dithione, Oxipurinol, 3-Amino-1H-pyrazole-4-carbonitrile.

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

Last updated: 11/3/2026

How to cite: Jingsj. "4-Amino-6-mercaptopyrazolo[3,4-d]pyrimidine (CAS 23771-52-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-17036-5 (accessed 2026-11-09).

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