4(3H)-Pyrimidinone,5-butyl-2-(dimethylamino)-6-methyl- cas no:5221-53-4

Name4(3H)-Pyrimidinone,5-butyl-2-(dimethylamino)-6-methyl-
CAS5221-53-4
Synonyms4(1H)-Pyrimidinone,5-butyl-2-(dimethylamino)-6-methyl- (9CI); 4-Pyrimidinol,5-butyl-2-(dimethylamino)-6-methyl- (7CI,8CI);2-Dimethylamino-6-hydroxy-4-methyl-5-butylpyrimidine;5-Butyl-2-dimethylamino-4-hydroxy-6-methylpyrimidine; Dimethirimol;Dimethyrimol; Melkeb; Methyrimol; Milcurb; NSC 263490; PP 675
EINECS(EC#)226-021-7
Molecular FormulaC11H19 N3 O
Molecular Weight209.33

refractive index1.536
storage temp0-6°C

Safety

Poison by intraperitoneal route. Moderately toxic by ingestion and possibly other routes. When heated to decomposition it emits toxic fumes of NO_x.

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Effect	Source
chicken	LD50	oral	4gm/kg (4000mg/kg)		Pesticide Manual. Vol. 9, Pg. 293, 1991.
guinea pig	LD50	oral	500mg/kg (500mg/kg)		Pesticide Manual. Vol. 9, Pg. 293, 1991.
mammal (species unspecified)	LD50	unreported	4gm/kg (4000mg/kg)		"Chemistry of Pesticides," Melnikov, N.N., New York, Springer-Verlag New York, Inc., 1971Vol. -, Pg. 423, 1971.
mouse	LD50	oral	800mg/kg (800mg/kg)		"Pesticide Index," Frear, E.H., ed., State College, PA, College Science Pub., 1969Vol. 5, Pg. 79, 1976.
rat	LD50	oral	2350mg/kg (2350mg/kg)		World Review of Pest Control. Vol. 9, Pg. 119, 1970.
rat	LD50	skin	> 400mg/kg (400mg/kg)		World Review of Pest Control. Vol. 9, Pg. 119, 1970.
rat	LDLo	intraperitoneal	200mg/kg (200mg/kg)		Nature. Vol. 219, Pg. 1160, 1968.