CAS 68-41-7 appears in our catalog under these names: D-Cycloserine, Cycloserine, D-Cycloserine, >95% (HPLC), D-Cycloserine/ 99.83% (existing batch purity), D–Cycloserine. Offered by: Chemat Brand, TRC, Mikromol, LoGiCal, Dr. Ehrenstorfer. Available pack sizes: on request, 100mg, 250mg, 5g, 10mg, 500mg, 50mg, 1g.