| Approval: | ISO |
|---|---|
| IUPAC PIN: | (5aΞ,6Ξ,9Ξ,9aΞ)-6,7,8,9,10,10-hexachloro-1,5,5a,6,9,9a-hexahydro-3H-6,9-methano-2,4,3λ4-benzodioxathiepin-3-one |
| IUPAC name: | 1,4,5,6,7,7-hexachloro-8,9,10-trinorborn-5-en-2,3-ylenebismethylene sulfite or 6,7,8,9,10,10-hexachloro-1,5,5a,6,9,9a-hexahydro-6,9-methano-2,4,3-benzodioxathiepin 3-oxide |
| CAS name: | 6,7,8,9,10,10-hexachloro-1,5,5a,6,9,9a-hexahydro-6,9-methano-2,4,3-benzodioxathiepin 3-oxide |
| CAS Reg. No.: | 115-29-7 |
| Formula: | C9H6Cl6O3S |
| Activity: | acaricides (chlorinated cyclodiene) insecticides (chlorinated cyclodiene) |
| Notes: | Originally believed to be a mixture of two stereoisomers referred to as alpha-endosulfan (which is an ISO common name) and beta-endosulfan. It was subsequently shown that endosulfan is a single geometric isomer but a mixture of conformers of the seven-membered ring: alpha-endosulfan is an asymmetric, enantiomeric pair of twist chair conformers while beta-endosulfan is a symmetrical conformer (W. F. Schmidt et al., J. Agric. Food Chem., 1997, 45, 1023). The beta- isomer can be converted to the alpha- but the opposite is apparently not true (W. F. Schmidt et al., J. Agric. Food Chem., 2001, 49, 5372). The name “thiodan” is used in Iran and was used in the former USSR (тиодан), but Thiodan is a registered trade mark in many countries. The name “benzoepin” is approved by the Japanese Ministry of Agriculture, Forestry and Fisheries. |
| Structure: |  |
| Pronunciation: | ěn-dō-sǔl-fǎn Guide to British pronunciation |
| InChIKey: | RDYMFSUJUZBWLH-UHFFFAOYSA-N |
| InChI: | InChI=1S/C9H6Cl6O3S/c10-5-6(11)8(13)4-2-18-19(16)17-1-3(4)7(5,12)9(8,14)15/h3-4H,1-2H2 |