NILE BLUE A CAS:... Trade Name: SIGMA Formula: C40H40N6O6S Dye content ≥75 % Dye content ≥75 % N5632 NIRTETRALIN CAS:... Trade Name: SIGMA Formula: C24H30O7 ≥95% (LC/MS-ELSD) ≥95% (LC/MS-ELSD) SMB00204 | ||||||||||||||||