CAS 75881-23-1 appears in our catalog under these names: Alcian Blue 8 GX (C.I. 74240), 55.00%, Alcian Blue, 1% solution in 3% acetic acid, pH 2.5, ALCIANBLUE 8GX SOLUTION, Alcian Blue 8GX, Dye content ~50%,RG, Dye content ~50%,RG. Offered by: Chemat, Sigma-Aldrich. Available pack sizes: 10g, 25g, 5g, 1l, 500ml, 100ML, 1g.