1-Decarboxy-1-hydroxymethyl-PGE1 1-Decarboxy-1-hydroxymethylprostaglandin E1 2-Decarboxy-2-hydroxymethylprostaglandin E1 21562-57-2 PGE1-Carbinol Prost-13-en-9-one, 1,11,15-trihydroxy-, (9alpha,13E,15S)- TR 4161 TR4161