131380-56-8

Basic information

• Product Name: 3-{[(2R,3S)-3-ethenyloxiran-2-yl]methyl}-2-methyl-4-oxocyclopent-2-en-1-yl (1R,3R)-3-[(1E)-3-methoxy-2-methyl-3-oxoprop-1-en-1-yl]-2,2-dimethylcyclopropanecarboxylate
• CAS NO: 131380-56-8
• Molecular Formula: C₂₂H₂₈O₆
• Molecular Weight: 388.4541
• Mol File: 131380-56-8.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 497.9°C at 760 mmHg
• Flash Point: 215.2°C
• Density: 1.18g/cm³
• Vapor Pressure: 4.74E-10mmHg at 25°C
• Refractive Index: 1.536
• CAS DataBase Reference: 3-{[(2R,3S)-3-ethenyloxiran-2-yl]methyl}-2-methyl-4-oxocyclopent-2-en-1-yl (1R,3R)-3-[(1E)-3-methoxy-2-methyl-3-oxoprop-1-en-1-yl]-2,2-dimethylcyclopropanecarboxylate(CAS DataBase Reference)
• NIST Chemistry Reference: 3-{[(2R,3S)-3-ethenyloxiran-2-yl]methyl}-2-methyl-4-oxocyclopent-2-en-1-yl (1R,3R)-3-[(1E)-3-methoxy-2-methyl-3-oxoprop-1-en-1-yl]-2,2-dimethylcyclopropanecarboxylate(131380-56-8)
• EPA Substance Registry System: 3-{[(2R,3S)-3-ethenyloxiran-2-yl]methyl}-2-methyl-4-oxocyclopent-2-en-1-yl (1R,3R)-3-[(1E)-3-methoxy-2-methyl-3-oxoprop-1-en-1-yl]-2,2-dimethylcyclopropanecarboxylate(131380-56-8)

Safety Data

• Hazardous Substances Data: 131380-56-8(Hazardous Substances Data)

Upstream product

• 121-29-9 Pyrethrin II 

Downstream Products

• 131486-45-8 8',9'-dihydroxypyrethrin II 

Relevant articles and documents

Molecular Markers for Pyrethrin Autoxidation in Stored Pyrethrum Crop: Analysis and Structure Determination

Pyrethrum is a natural insecticide extracted from Tanacetum cinerariifolium. Six esters, the pyrethrins, are responsible for the extract's insecticidal activity. The oxidative degradation of pyrethrins through contact with aerial oxygen is a potential cause of pyrethrin losses during pyrethrum manufacture. Described here is the first investigation of the autoxidation chemistry of the six pyrethrin esters isolated from pyrethrum. It was found that pyrethrins I and II, the major pyrethrin esters present in pyrethrum, undergo autoxidation more readily than the minor pyrethrin esters, the jasmolins and cinerins. Chromatographic analysis of pyrethrin I and II autoxidation mixtures showed some correlation with a similar analysis performed on extracts from T. cinerariifolium crop, which had been stored for 12 weeks without added antioxidants. Two pyrethrin II autoxidation products were isolated, characterized, and shown to be present in extracts of stored T. cinerariifolium crop, confirming that autoxidation of pyrethrin esters does occur during crop storage.