3-beta-D-Ribofuranosyl-3,4,7,8-tetrahydroimidazo(4,5-d)(1,3)diazepin-7-ol 67187-35-3 BRN 1224187 Imidazo(4,5-d)(1,3)diazepin-7-ol, 3,4,7,8-tetrahydro-3-beta-D-ribofuranosyl- Isocoformycin