Assertion: amorphous azadirachtin | /r/HasProperty | 7.3%
Facets:
Source sentences:
text: (6), the combined dichlromethane extract is subjected to flash chromatography (Silicagel, eluent, diethylether/methanol) to give amorphous azadirachtin (7.3%, 7.4g.), as an orange solid.
text: (6), the combined dichloromethane extract is subjected to flash chromatography (Silicagel, eluent, diethylether/methanol) to give amorphous azadirachtin (7.3%, 7.4g.), as an orange solid
text: (1), neem seeds suspended in hexane (21.) were stirred occasionally at ambient temperature for several hours and the hexane extract was decanted and the process was repeated three more times; (2), the defatted marc from step 1 was extracted six times with methanol (21.) successively, in the same manner as with n-hexane; (3), the filtrate of combined methanol extracts was concentrated in vacuo to give an orange tar (78 g.); (4), the orange tar from step 4 was redissolved in methanol (21.) and diluted with distilled water (21.) under stirring; (5), the aqueous methanol mixture from step 4 is extracted three times with equal portions of n-hexane followed by three equal quantities of dichloromethane; (6), the combined dichloromethane extract is subjected to flash chromatography (Silicagel, eluent, diethylether/methanol) to give amorphous azadirachtin (7.3%, 7.4 g.), as an orange solid.