8-Mercaptopurine

Also known as: 7H-Purine-8-thiol, Purine-8-thiol, 7,9-Dihydropurine-8-thione, NSC23721, 7,9-Dihydro-8H-purine-8-thione, 8H-Purine-8-thione, 7,9-dihydro-

8-Mercaptopurine (CAS 583-40-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H4N4S and a molecular weight of 152.17700 g/mol. Key properties include a boiling point of 330ºC at 760 mmHg, a density of 1.62 g/cm3 and a flash point of 153.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 583-40-4
Jingsj CID: J-7551-4
Molecular Formula: C₅H₄N₄S
Molecular Weight: 152.17700 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	330ºC at 760 mmHg
Density	1.62 g/cm3
Flash Point	153.4ºC
Exact Mass	152.01600
PSA	89.45000
LogP	1.01550
Refractive Index	1.78

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 8-Mercaptopurine?

The CAS number of 8-Mercaptopurine is 583-40-4.

What are the molecular formula and molecular weight of 8-Mercaptopurine?

8-Mercaptopurine has molecular formula C5H4N4S and molecular weight 152.17700 g/mol.

What are the upstream and downstream products of 8-Mercaptopurine?

For 8-Mercaptopurine, Upstream Products: 4,5-Diaminopyrimidine; Downstream Products: 1H-Purin-8-amine, N-methyl- (9CI), 8-Aminopurine.

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. "8-Mercaptopurine (CAS 583-40-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-7551-4 (accessed 2026-11-09).

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