CAS 1185-53-1 appears in our catalog under these names: Tris(hydroxymethyl)aminomethane hydrochloride, 99+% , Tris-HCl, 1M soln., pH 8.0, Molecular Biology Grade, Ultrapu, Tris(hydroxymethyl)aminomethan , Tris(hydroxymethyl)aminomethane hydrochloride, Molecular Bio, TRIS-HCl, 0.5M buffer soln., pH 7.4, low endotoxin . Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 1000g, 50g, 250g, 100ml, 500ml, 1L, 250ml, 100g.