.beta.-D-Ribofuranoside, methyl-5-[(2-chloroethyl)amino]-5-deoxy-2,3-O-(1-methylethyldene)-, dihydrochloride 54946-35-9 Furo[3,4-d]-1,3-oxole, .beta.-D-ribofuranoside deriv. MP 697 NSC50741 Riboside Mustard