2-bromo-5-(methoxymethyl)thiophene

N,N-二甲基甲酰胺

2-(甲氧基甲基)噻吩

methyl 3,4-O-isopropylidene-5-thio-α-D-altropyranoside

6-chloro-2,5,6-trideoxy-2,5-epithio-3,4-O-isopropylidene-D-allose dimethyl acetal