ஐ.எஸ்.எஸ்.என்: 2329-6631
Philip Lisberg and Feodor Scheinmann
Racemic methadone, a mixture of its two enantiomeric optically active forms, R-(-)-Methadone and S-(+)-Methadone (also known as levo-methadone and dextro-methadone), was first synthesized in Germany before the outbreak of World War II.