5,5-Diphenyl-2-thiohydantoin

Also known as: 4-Imidazolidinone,5,5-diphenyl-2-thioxo, 5,5-Diphenyl-2-thioxo-4-imidazolidinone, 5,5-Diphenyl-2-thioxo-imidazolidin-4-one, 5,5-Diphenyl-2-thioxoimidazolidin-4-one, 5,5-diphenyl-2-sulfanylideneimidazolidin-4-one, 5,5-Diphenylthiohydantoin, DPTH, Diphenylthiohydantoin, EINECS 244-201-3, Hydantoin, 5,5-diphenyl-2-thio., MFCD00005278, THIOPHENYTOIN, diphenylthiohydantoin, 5,5'-diphenyl-2-thiohydantoin

5,5-Diphenyl-2-thiohydantoin (CAS 21083-47-6) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C15H12N2OS and a molecular weight of 268.33400 g/mol. Key properties include a melting point of 237-239ºC(lit.) and a density of 1.34g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 21083-47-6
Jingsj CID: J-37590-4
Molecular Formula: C₁₅H₁₂N₂OS
Molecular Weight: 268.33400 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	237-239ºC(lit.)
Density	1.34g/cm3
Exact Mass	268.06700
PSA	73.22000
LogP	2.59210
Refractive Index	1.711

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 5,5-Diphenyl-2-thiohydantoin?

The CAS number of 5,5-Diphenyl-2-thiohydantoin is 21083-47-6.

What are the molecular formula and molecular weight of 5,5-Diphenyl-2-thiohydantoin?

5,5-Diphenyl-2-thiohydantoin has molecular formula C15H12N2OS and molecular weight 268.33400 g/mol.

What are the upstream and downstream products of 5,5-Diphenyl-2-thiohydantoin?

For 5,5-Diphenyl-2-thiohydantoin, Upstream Products: Benzil, 1,3-Dibromopropane, Benzoin; Downstream Products: Benzhydrylamine, Phenytoin, 2,2-Diphenylglycine.

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. "5,5-Diphenyl-2-thiohydantoin (CAS 21083-47-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-37590-4 (accessed 2026-11-06).

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