2-Amino-5-methyl-4(3H)-pyrimidinone
[CAS# 15981-91-6]

Identification

• Classification: Pharmaceutical intermediate >> Heterocyclic compound intermediate >> Pyrimidine compound >> Aminopyrimidine
• Name: 2-Amino-5-methyl-4(3H)-pyrimidinone
• Synonyms: 2-Amino-5-methylpyrimidin-4-ol; 2-amino-5-methyl-4(1H)-pyrimidinone; 5-Methylisocytosine; NSC 60208
• Molecular Formula: C₅H₇N₃O
• Molecular Weight: 125.13
• CAS Registry Number: 15981-91-6
• EC Number: 863-203-0

Properties

• Solubility: Slightly soluble (2.3 g/L) (25 ºC), Calc.^*
• Density: 1.44±0.1 g/cm³ (20 ºC 760 Torr), Calc.^*
• Melting point: 294 ºC (decomp)^**

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2017 ACD/Labs)

^** Stoss, Peter; Journal of Heterocyclic Chemistry 1991, V28(2), P231-6.

Safety Data

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Specific target organ toxicity - single exposure	STOT SE	3	H335
Serious eye damage	Eye Dam.	1	H318
Acute toxicity	Acute Tox.	4	H302
Skin irritation	Skin Irrit.	2	H315