Bioallethrin is a brand name for an ectoparasiticide. It consists of two of the eight stereoisomers of allethrin I in an approximate ratio of 1:1.[1] [2] The name Bioallethrin is a registered trademark of Sumitomo Chemical.[3]
Esbiothrin (CAS number) is a mixture of the same two stereoisomers, but in an approximate ratio of R:S = 1:3.
Esbioallethrin or S-bioallethrin (CAS number) is the pure S-form (that is, the wedge in the structure as shown in the box points down).[4]
The name bioallethrin is a common name approved by the British Standards Institution and published in.[5] It is also included in [6] and earlier editions.