2-Methylformycin 42204-46-6 7-Amino-2-methyl-3-(beta-D-ribofuranosyl)pyrazolo(4,3-d)pyrimidine D-Ribitol, 1-C-(7-amino-2-methyl-2H-pyrazolo(4,3-d)pyrimidin-3-yl)-1,4-anhydro-, (S)-