3-Amino-1-methyl-1-phenylthiourea

3-氨基-1-甲基-1-苯基硫脲

Also known as: N-Methyl-N-phenylhydrazinecarbothioamide, 4-Methyl-4-phenyl-3-thiosemicarbazide, Hydrazinecarbothioamide, N-methyl-N-phenyl-, 4-Methyl-4-phenylthiosemicarbazide, N1-Methyl-N1-phenylhydrazine-1-carbothioamide

3-Amino-1-methyl-1-phenylthiourea (CAS 21076-11-9) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C8H11N3S and a molecular weight of 181.25800 g/mol. It is also known as N-Methyl-N-phenylhydrazinecarbothioamide, 4-Methyl-4-phenyl-3-thiosemicarbazide and Hydrazinecarbothioamide, N-methyl-N-phenyl-. Key properties include a melting point of 135-136ºC, a boiling point of 302.7ºC at 760 mmHg, a density of 1.27 g/cm3 and a flash point of 136.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 21076-11-9
Jingsj CID: J-1156460-3
Molecular Formula: C₈H₁₁N₃S
Chinese Name: 3-氨基-1-甲基-1-苯基硫脲
Molecular Weight: 181.25800 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	135-136ºC
Boiling Point	302.7ºC at 760 mmHg
Density	1.27 g/cm3
Flash Point	136.8ºC

Frequently Asked Questions

What is the CAS number of 3-Amino-1-methyl-1-phenylthiourea?

The CAS number of 3-Amino-1-methyl-1-phenylthiourea is 21076-11-9.

What are the molecular formula and molecular weight of 3-Amino-1-methyl-1-phenylthiourea?

3-Amino-1-methyl-1-phenylthiourea has molecular formula C8H11N3S and molecular weight 181.25800 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "3-Amino-1-methyl-1-phenylthiourea (CAS 21076-11-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1156460-3 (accessed 2026-10-25).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.