The chemical Merocyanine 540 has a designated molecular formula of C26H32N3NaO6S2 and a molecular weight of 569.667 g/mol. Synonyms may include: MC 540, NK 2272, UNII-BS0KSN6L1U (ChemID). Merocyanine 540 has been assigned a MeSH pharmacological action of: Antivirals.