Streptolydigin

Formula : C32-H44-N2-O9
CAS : 7229-50-7 

Antibiotic isolated from culture filtrates of Streptomyces lydicus; active against gram-postive bacteria except micrococci.

Streptolysin S

Formula : Unspecified
CAS : 87502-32-7 

Oxygen-stable hemolysin produced by the group A streptococus upon exposure to various substances.