1-.beta.-D-arabinofuranosyl-5-(2-bromovinyl)uracil 2,4(1H,3H)-Pyrimidinedione, 1-.beta.-D-arabinofuranosyl-5-[(1E)-2-bromoethenyl]- 77181-69-2 80434-16-8 AIDS-070981 AIDS070981 BV ara-U BV-ara-U BVAU BVaraU Bravavir Bromovinyl araU Brovavir SQ-32756 Sorivudine Usevir YN-72