1,3-Dimethyl-2-thiohydantoin

Also known as: N,N'-Dimethylthiohydantoin, 1,3-Dimethyl-2-thioxoimidazolidin-4-one, 4-Imidazolidinone, 1,3-dimethyl-2-thioxo-, 1,3-dimethyl-2-sulfanylideneimidazolidin-4-one, Dimethylthiohydantoin

1,3-Dimethyl-2-thiohydantoin (CAS 1801-62-3) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C5H8N2OS and a molecular weight of 144.19500 g/mol. Key properties include a melting point of 93ºC, a boiling point of 182.6ºC at 760 mmHg, a density of 1.33g/cm3 and a flash point of 64.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1801-62-3
Jingsj CID: J-35181-5
Molecular Formula: C₅H₈N₂OS
Molecular Weight: 144.19500 g/mol
Category: Organic Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	93ºC
Boiling Point	182.6ºC at 760 mmHg
Density	1.33g/cm3
Flash Point	64.2ºC
Exact Mass	144.03600
PSA	55.64000
Vapor Pressure	0.806mmHg at 25°C
Refractive Index	1.621

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 1,3-Dimethyl-2-thiohydantoin?

The CAS number of 1,3-Dimethyl-2-thiohydantoin is 1801-62-3.

What are the molecular formula and molecular weight of 1,3-Dimethyl-2-thiohydantoin?

1,3-Dimethyl-2-thiohydantoin has molecular formula C5H8N2OS and molecular weight 144.19500 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. "1,3-Dimethyl-2-thiohydantoin (CAS 1801-62-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-35181-5 (accessed 2026-11-09).

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