136286-50-5 FR 901367 L-Cysteine, N-acetyl-S-(4,4a,5,6,7,12,12a,12b-octahydro-4a,6,8,12a,12b-pentahydroxy-3-methyl-1,7,12-trioxobenz(a)anthracen-6a(1H)-yl)- WS 009B WS-009B