1945-77-3 AIDS-030546 AIDS030546 Methylthymol blue NSC74311 {[3-(3-{3-[(Bis-carboxymethyl-amino)-methyl]-4-hydroxy-5-isopropyl-2-methyl-phenyl}-1,1-dioxo-1,3-dihydro-1-lambda-~6~-benzo[c][1,2]oxathiol-3-yl)-6-hydroxy-5-isopropyl-2-methyl-benzyl]-carboxymethyl-amino}-acetic acid