Cyclopropanecarboxylicacid, 3-[(1E)-3-methoxy-2-methyl-3-oxo-1-propen-1-yl]-2,2-dimethyl-,(1S)-2-methyl-4-oxo-3-(2Z)-2,4-pentadien-1-yl-2-cyclopenten-1-yl ester,(1R,3R)- cas no:121-29-9

NameCyclopropanecarboxylicacid, 3-[(1E)-3-methoxy-2-methyl-3-oxo-1-propen-1-yl]-2,2-dimethyl-,(1S)-2-methyl-4-oxo-3-(2Z)-2,4-pentadien-1-yl-2-cyclopenten-1-yl ester,(1R,3R)-
CAS121-29-9
SynonymsCyclopropaneacrylicacid, 3-carboxy-a,2,2-trimethyl-,1-methyl ester, ester with4-hydroxy-3-methyl-2-(2,4-pentadienyl)-2-cyclopenten-1-one (7CI,8CI);Cyclopropanecarboxylic acid,3-(3-methoxy-2-methyl-3-oxo-1-propenyl)-2,2-dimethyl-, 2-methyl-4-oxo-3-(2,4-pentadienyl)-2-cyclopenten-1-ylester, [1R-[1a[S*(Z)],3b(E)]]-; Cyclopropanecarboxylicacid, 3-[(1E)-3-methoxy-2-methyl-3-oxo-1-propenyl]-2,2-dimethyl-,(1S)-2-methyl-4-oxo-3-(2Z)-2,4-pentadienyl-2-cyclopenten-1-yl ester, (1R,3R)-(9CI); Pyrethrin II (6CI); (+)-Pyrethronyl (+)-pyrethrate; Biospray S;Pyrethrin; Pyrethrin 2; Pyrethrum mist
EINECS(EC#)204-462-6
Molecular FormulaC22H28 O5
Molecular Weight372.50

refractive index1.528

Hazardclass6.1(b)

Hazard Xn: Harmful;N: Dangerous for the environment;
Risk R20/21/22
Safety

Poison experimentally by ingestion and intravenous routes. Moderately toxic to humans by unspecified route. An allergen. When heated to decomposition it emits acrid smoke and irritating fumes. An insecticide. See also PYRETHRIN; PYRETHRIN I; PYRETHRINS.
Hazard CodesXn,N
Risk Statements 20/21/22-50/53
R20/21/22: Pyrethrin II (CAS NO.121-29-9) is harmful by inhalation, in contact with skin and if swallowed. 
R50/53:Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Safety Statements 13-60-61
S13:Keep Pyrethrin II (CAS NO.121-29-9) away from food, drink and animal foodstuffs. 
S60:This material and its container must be disposed of as hazardous waste. 
S61:Avoid release to the environment. Refer to special instructions / safety data sheets.
RIDADR 2902
HazardClass 6.1(b)
PackingGroup III
 

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Effect	Source
man	LDLo	unreported	1029mg/kg (1029mg/kg)		"Poisoning; Toxicology, Symptoms, Treatments," 2nd ed., Arena, J.M., Springfield, IL, C.C. Thomas, 1970Vol. 2, Pg. 73, 1970.
mouse	LD50	oral	130mg/kg (130mg/kg)		Agricultural and Biological Chemistry. Vol. 37, Pg. 2681, 1973.
rat	LD50	intravenous	1mg/kg (1mg/kg)	BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) BEHAVIORAL: TREMOR BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD	Pesticide Biochemistry and Physiology. Vol. 2, Pg. 308, 1972.
rat	LD50	oral	200mg/kg (200mg/kg)		Agricultural Research Service, USDA Information Memorandum. Vol. 20, Pg. 17, 1966.