CAS 1135-40-6 appears in our catalog under these names: CAPS, 99% , CAPS, 0.5M buffer soln., pH 10 , CAPS, 0.5M buffer soln., pH 11 , CAPS, 0.5M buffer soln., pH 9. . Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 25g, 100g, 500g, 250ml, 500ml.