DIFF Subgroup
C07F 9/1658 Full Title
Compounds containing elements of Groups 5 or 15 of the Periodic Table > Phosphorus compounds (sugar phosphates C07H11/04; nucleotides C07H19/00, C07H21/00; nucleic acids C07H21/00) > without P—C bonds > Esters of thiophosphoric acids or thiophosphorous acids > Esters of thiophosphoric acids