ACIMIC; ABACIDE; ABAMECTINE; DYNAMEC; DYNAMEC(R); BERMECTINE; AVERMECTIN B; AVERMECTIN B1; avermectin B1b; avermectin B1a; (10E,14E,16E,22Z)-(1R,4S,5'S,6S,6'R,8R,12S,13S,20R,21R,24S)-6'-[(S)-sec-butyl

(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-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-4-O-(2,6-dideoxy-3-O-methyl-a-L-arabino-hexopyranosyl)-3-O-methyl-a-L-arabino-hexopyranoside (i) mixture with (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-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-4-O-(2,6-dideoxy-3-O-methyl-a-L-arabino-hexopyranosyl)-3-O-methyl-a-L-arabino-hexopyranoside (ii) (4:1)

C₄₈H₇₂O₁₄; C₄₇H₇₀O₁₄

Form Colourless to pale yellow crystals.

Melting point 161.8-169.4℃ (decomp.).

Density 1.18 (22℃).

Solubility In water 7-10 mg/l (20℃). In toluene 350, acetone 100, isopropanol 70, chloroform 25, ethanol 20, methanol 19.5, n-butanol 10, cyclohexane 6 (all in g/l, 21℃).

Oral Acute oral LD50 (in sesame oil) for rats 10, mice 13.6 mg/kg; (in water) for rats 221 mg/kg.

Skin and eye Acute percutaneous LD50 for rabbits >2000 mg/kg.

Mild eye irritant; non-irritating to skin (rabbits).

Control of motile stages of mites, leaf miners, suckers, Colorado beetles, etc. on ornamentals, cotton, citrus fruit, pome fruit, nut crops, vegetables, potatoes, and other crops.

Description: White to light yellow crystalline powder, free from visible extraneous matter;

Content of Avemectin (B1a+B1b): B1a≥90.0%;

B1a+B1b; α (B1a+B1b): ≥4.0;

Loss on Drying: ≤2.0%;

Water (w/w): ≤0.3%;

pH Range: 4.5~7.0;

Acetone Insoluble Material(w/w): ≤0.2%