Macbecin II

Formula : C30-H44-N2-O8
CAS : 73341-73-8 

From Norcardia sp. No. C-14919; belongs to ansamycin group of antibiotics.

Macedonic acid methyl ester

Formula : C31-H48-O4
CAS : 38987-84-7 

From Glycyrrhiza paliddiflora Maxim.

Machilin A

Formula : C22-H22-O4
CAS : 110269-50-6 

Stimulates osteoblast differentiation; isolated from Myristica fragrans.