1,2-Cyclobutanedimethanol, 3-(6-amino-9H-purin-9-yl)-, (1alpha,2beta,3alpha)-(+-)- 124770-85-0 9-(2,3-Bis(hydroxymethyl)-1-cyclobutyl)adenine C-Oxt-A Carbocyclic oxetanocin A Carboxetanocin A Cyclobut A Cyclobut-A