121-21-1, CAS No 121-21-1

121-21-1 2-methyl-4-oxo-3-(penta-2,4-dienyl)cyclopent-2-enyl chrysanthemate
Product Name	2-methyl-4-oxo-3-(penta-2,4-dienyl)cyclopent-2-enyl chrysanthemate
Synonyms	pyrethrine I;(1S)-2-methyl-4-oxo-3-[(2Z)-penta-2,4-dien-1-yl]cyclopent-2-en-1-yl (1R,3R)-2,2-dimethyl-3-(2-methylprop-1-en-1-yl)cyclopropanecarboxylate;2-methyl-4-oxo-3-[(2E)-penta-2,4-dien-1-yl]cyclopent-2-en-1-yl 2,2-dimethyl-3-(2-methylprop-1-en-1-yl)cyclopropanecarboxylate;(1S)-2-methyl-4-oxo-3-[(2E)-penta-2,4-dien-1-yl]cyclopent-2-en-1-yl (1R,3R)-2,2-dimethyl-3-(2-methylprop-1-en-1-yl)cyclopropanecarboxylate
Molecular Formula	C₂₁H₂₈O₃
Molecular Weight	328.4452
InChl	InChI=1/C21H28O3/c1-7-8-9-10-15-14(4)18(12-17(15)22)24-20(23)19-16(11-13(2)3)21(19,5)6/h7-9,11,16,18-19H,1,10,12H2,2-6H3/b9-8+/t16-,18+,19+/m1/s1
CAS Registry Number	121-21-1
EINECS	204-455-8
Molecular Structure
Density	1.04g/cm³
Boiling Point	424.3°C at 760 mmHg
Refractive Index	1.524
Flash Point	182.3°C
Vapour Pressur	2.09E-07mmHg at 25°C

121-21-1 2-methyl-4-oxo-3-(penta-2,4-dienyl)cyclopent-2-enyl chrysanthemate