... The older numbering system will conform to the Chemical Abstracts system by increasing each position number by one. ... Wt gain, ga Survivors 5 f 2 8/8 16 f 2 8/8 55 f 4 8/8 62 f 3 9/9 76 f 2 7/7 59 f 3 9/9 103 f 6 6/9 ... 3/9 117 =!z 7 8/8 b 105 f 5 8/8 ... Division of Medicinal Chemistry ...