(6S,9 alpha,11alpha,13E,15S)-6,9-Epoxy-11,15-dihydroxyprost-13-en-1-oic acid 5,6 beta-Dihydro-PGI2 5,6-Dihydro-PGI2 5,6-Dihydro-PGX 5,6-Dihydroprostacyclin 5,6-Dihydroprostaglandin I2 6-beta-PGI(1) 62770-50-7 6beta-Pgi1 6beta-Prostaglandin I1