avermektin B 1a
(10E,14E,16E,22Z)- (1R,4S,5'S,6S,6'R,8R,12S,13S,20R,21R,24S)-6'-[(S)- sec-butyl]-21,24-dihydroxy-5',11,13,22-tetramethyl-2-oxo-3,7,19-trioxatetracyklo[15.6.1.14,8020,24 ]pentakosa-10,14,16,22- tetraen-6-spiro-2'-(5',6'- dihydro-2'H-pyran)-12-yl 2,6-dideoxy-4-O-(2,6- dideoxy-3-O-methyl-?-L- arabino-hexopyranosyl)-3- O-methyl-?-L-arabino- hexopyranosid

avermektinB 1b
(10E,14E,16E,22Z)- (1R,4S,5'S,6S,6'R,8R,12S,13S,20R,21R,24S)-21,24- dihydroxy-6'-isopropyl- 5',11,13,22-tetramethyl-2- oxo-3,7,19-trioxatetracyklo[15.6.1.14,8020,24 ]pentakosa-10,14,16,22- tetraen-6-spiro-2'-(5',6'- dihydro-2'H-pyran)-12-yl 2,6-dideoxy-4-O-(2,6- dideoxy-3-O-methyl-?-L- arabino-hexopyranosyl)-3- O-methyl-?-L-arabino- hexopyranosid

Druh

Účinná látka je obsažena v přípravcích