CAS 19381-50-1 appears in our catalog under these names: Acid Green 1, Acid Green 1, >80.0%(E), Naphthol green B, Naphthol Green B , Naphthol Green B (C.I. 10020). Offered by: Chemat, TCI, GLPBio, Thermo Scientific (Alfa Aesar), Biosynth. Available pack sizes: 25g, 100g, 500g, 1kg, 250g, 1000g, 2000g, 1g.