25878-33-5 6H-Furo[2',3',4,5]oxazolo[3,2-a]pyrimidine-2-methanol, 6-imino-2,3,3a,9a-tetrahydro-3-hydroxy-, 3-(dihydrogen phosphate) 6H-Furo[2',3':4,5]oxazolo[3,2-a]pyrimidine-2-methanol, 2,3,3a,9a-tetrahydro-6-imino-3-(phosphonooxy)-, (2R-(2.alpha.,3.beta.,3a.beta.,9a.beta.))- NSC128687