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4(1H)-Pyrimidinone,2,3-dihydro-5-methyl-2-thioxo- cas no:636-26-0

Synonyms: Thymine,2-thio- (6CI,8CI); 2-Thiothymine; 4-Hydroxy-5-methyl-2-mercaptopyrimidine;4-Hydroxy-5-methylpyrimidine-2-thione; 5-Methyl-2-thiouracil;5-Methyl-2-thioxo-2,3-dihydro-1H-pyrimidin-4-one; NSC 314272; NSC 9377;Thiothymine

Identification
Name4(1H)-Pyrimidinone,2,3-dihydro-5-methyl-2-thioxo-
CAS636-26-0
SynonymsThymine,2-thio- (6CI,8CI); 2-Thiothymine; 4-Hydroxy-5-methyl-2-mercaptopyrimidine;4-Hydroxy-5-methylpyrimidine-2-thione; 5-Methyl-2-thiouracil;5-Methyl-2-thioxo-2,3-dihydro-1H-pyrimidin-4-one; NSC 314272; NSC 9377;Thiothymine
Molecular FormulaC5H6 N2 O S
Molecular Weight142.18
Chemical Properties
Appearancewhite crystalline powder
refractive index1.638
Safety Data

Risk R22;R40
Safety

Poison by unspecified route. Slightly toxic by intraperitoneal route. When heated to decomposition it emits toxic vapors of NOx and SOx
Risk Statements:
R22:Harmful if swallowed. 
R40:Limited evidence of a carcinogenic effect.
Safety Statements:
S22:Do not breathe dust. 
S36/37:Wear suitable protective clothing and gloves.
RTECS: XP2108500


Toxicity
Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
rabbit LDLo unreported 100mg/kg (100mg/kg)   Journal of Pharmacology and Experimental Therapeutics. Vol. 97, Pg. 478, 1949.
rat LDLo intraperitoneal 1gm/kg (1000mg/kg)   Journal of Pharmacology and Experimental Therapeutics. Vol. 97, Pg. 478, 1949.

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