5-(6)-Carboxynaphthofluoroscein N-succinimidyl ester discontinued. See 434537 CAS:150347-58-3 267542 5-[(5-AMINO-1,3,4-THIADIAZOL-2-YL)METHYL]-1,3,4-THIADIAZOL-2-YLAMINE OXALATE CAS:1177328-21-0 434713 | ||||||||||||||