Application
3-Chloro-3-methyl-1-butyne was used in preparation of:series of benzo[b]pyrano[2,3-i]xanthen-6-ones and benzo[b]pyrano[3,2-h]xanthen-7-ones6-hydroxy-3,3-dimethyl-3H,7H-benzo[a]pyrano[3,2-h]xanthen-7-one5-hydroxy-2,2-dimethyl-2H,6H-benzo[a]pyrano[2,3-i]xanthen-6-one3,3-dimethyl-3Hbenzofuro[3,2-f][1]-benzopyran
Packaging
5, 25 g in ampule
This product has met the following criteria: