4,5-diamino-2-mercaptopyrimidine

Also known as: 4,5-diamino-2-pyrimidinethione, 2-mercapto-4,5-pyrimidinediamine, 4,5-diaminopyrimidine-2-thiol, 4,5-diamino-1H-pyrimidine-2-thione, 4,5-diaminopyrimidine-2(1H)-thione, 4,5-diamino-2(1H)-pyrimidinethione, 2(1H)-pyrimidinethione,4,5-diamino, 4,5-diamino-1H-pyrimidin-2-thion

4,5-diamino-2-mercaptopyrimidine (CAS 14623-58-6) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H6N4S and a molecular weight of 142.18200 g/mol. Key properties include a melting point of 250℃ (DEC.), a boiling point of 229.3ºC at 760 mmHg, a density of 1.78 g/cm3 and a flash point of 92.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 14623-58-6
Jingsj CID: J-1510293-9
Molecular Formula: C₄H₆N₄S
Molecular Weight: 142.18200 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	250℃ (DEC.)
Boiling Point	229.3ºC at 760 mmHg
Density	1.78 g/cm3
Flash Point	92.5ºC
Exact Mass	142.03100
PSA	116.62000
LogP	1.09210

Customs & Trade Information

HS Code	2933599090
Summary	2933599090. other compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure. 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 4,5-diamino-2-mercaptopyrimidine?

The CAS number of 4,5-diamino-2-mercaptopyrimidine is 14623-58-6.

What are the molecular formula and molecular weight of 4,5-diamino-2-mercaptopyrimidine?

4,5-diamino-2-mercaptopyrimidine has molecular formula C4H6N4S and molecular weight 142.18200 g/mol.

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. "4,5-diamino-2-mercaptopyrimidine (CAS 14623-58-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1510293-9 (accessed 2026-11-09).

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