CAS 152-18-1 appears in our catalog under these names: Trimethyl Thiophosphate, >95% (HPLC), O,O,O-Trimethylthiophosphate, Trimethyl thiophosphate , Trimethyl thiophosphate, Trimethylthiophosphate 95%. Offered by: TRC, Dr. Ehrenstorfer, Thermo Scientific (Alfa Aesar), Biosynth, Ambeed. Available pack sizes: 1g, 2,5g, 500mg, 100mg, 5g, 25g, 10g.