CAS 1839-18-5 appears in our catalog under these names: Cladribine EP Impurity C, 2-Chloroadenine, >95% (HPLC), 2-Chloroadenine, >98.0%(HPLC)(T), 6-Amino-2-chloropurine, 2-chloroadenine 97%. Offered by: Chemat Brand, TRC, Mikromol, TCI, Biosynth. Available pack sizes: on request, 500mg, 25mg, 100mg, 1g, 5g, 25g, 10g.