Properties: Clear, moist, off-white to slightly yellow powder. [a]D +71.5 ± 3° (c = 0.755 in chloroform). uv max (methanol): 238, 245 nm (e 27100, 30100). Soly in water: ~4 mg/ml. Virtually insol in satd hydrocarbons such as cyclohexane. Highly sol in methyl ethyl ketone, propylene glycol, polyethylene glycol. LD50 in dogs, rhesus monkeys (mg/kg): about 80, more than 24 orally. (MSDS Merck Co. Inc., 2003).
Optical Rotation: [a]D +71.5 ± 3° (c = 0.755 in chloroform)
Absorption maximum: uv max (methanol): 238, 245 nm (e 27100, 30100)
Toxicity data: LD50 in dogs, rhesus monkeys (mg/kg): about 80, more than 24 orally. (MSDS Merck Co. Inc., 2003)
Derivative Type: Component B1a
CAS Registry Number: 71827-03-7
CAS Name: 5-O-Demethyl-22,23-dihydroavermectin A1a
Additional Names: 22,23-dihydroavermectin B1a; 22,23-dihydro C-076B1a
Percent Composition: C 65.88%, H 8.52%, O 25.60%
Properties: Crystals from ethanol/water, mp 155-157°.
Melting point: mp 155-157°
Derivative Type: Component B1b
CAS Registry Number: 70209-81-3
CAS Name: 5-O-Demethyl-25-de(1-methylpropyl)-22,23-dihydro-25-(1-methylethyl)avermectin A1a
Additional Names: 22,23-dihydroavermectin B1b
Percent Composition: C 65.56%, H 8.43%, O 26.01%
Therap-Cat: Anthelmintic (Onchocerca).
Therap-Cat-Vet: Anthelmintic, insecticide, acaricide.
Keywords: Anthelmintic (Nematodes).
产品链接: 70288-86-7››