(R)-3,4,7,8-Tetrahydro-3-beta-D-ribofuranosylimidazo(4,5-d)(1,3)diazepin-8-ol 11033-22-0 COFORMYCIN Imidazo(4,5-d)(1,3)diazepin-8-ol, 3,4,7,8-tetrahydro-3-beta-D-ribofuranosyl-, (R)- NSC 277817