CAS 55687-19-9 appears in our catalog under these names: 5-Chloroquinoxalin-2-ol, 5-Chloroquinoxalin-2-ol 95%, 5-Chloro-2(1H)-quinoxalinone, 96%, 96%, 5-Chloroquinoxalin-2-ol, 96%. Offered by: Biosynth, Ambeed, Chemat, Fluorochem. Available pack sizes: 5g, 250mg, 1g, 100mg.