Common name emamectin
IUPAC name A mixture containing 90% of (10E,14E,16E)-(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-trioxatetracyclo[15.6.1.14,8.020,24]pentacosa-10,14,16,22-tetraene-6-spiro-2′-(5′,6′-dihydro-2′H-pyran)-12-yl 2,6-dideoxy-3-O-methyl-4-O-(2,4,6-trideoxy-3-O-methyl-4-methylamino-α-L-lyxo-hexopyranosyl)-α-L-arabino-hexopyranoside and 10% of (10E,14E,16E)-(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-trioxatetracyclo[15.6.1.14,8.020,24]pentacosa-10,14,16,22-tetraene-6-spiro-2′-(5′,6′-dihydro-2′H-pyran)-12-yl 2,6-dideoxy-3-O-methyl-4-O-(2,4,6-trideoxy-3-O-methyl-4-methylamino-α-L-lyxo-hexopyranosyl)-α-L-arabino-hexopyranoside
CAS RN [119791–41–2], formerly [123997–28–4] and [137335–79–6]
Molecular Weight: 886.1 (B1a); 872.1 (B1b)
Molecular Formula: C49H75NO13 (B1a); C48H73NO13 (B1b)
Chemical Group: avermectin
Emamectin benzoate
CAS RN [155569–91–8], formerly [137512–74–4] and [179607–18–2]
Composition A mixture of emamectin B1a (≥90%) and emamectin B1b (≤10%), as their benzoate salts.
Molecular Weight: 1008.3 (B1a); 994.2 (B1b)
Molecular Formula: C56H81NO15 (B1a); C55H79NO15 (B1b)
Chemical Group: avermectin