37259-87-3 37263-57-3 4-Benzoxazolecarboxylic acid, 5-(methylamino)-2-((3,9,11-trimethyl-8-(1-methyl-2-oxo-2-(1H-pyrrol-2-yl)ethyl)-1,7-dioxaspiro(5.5)undec-2-yl)methyl)-, (6S-(6alpha(2S*,3S*),8beta(R*),9beta,11alpha))- 51257-80-8 51310-65-7 52665-69-7 53095-21-9 A 23187 A-23187 A23187 Antibiotic A23187 Calcimycin EINECS 258-084-1 Ionophore A23187