CAS DataBase Reference:O-{6β-[3-(2-chloro-phenyl)-5-methyl-isoxazole-4-carbonylamino]-penicillanoyl}-N-benzylidene-hydroxylamine(CAS DataBase Reference)
The CAS Registry Mumber 30154-75-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,0,1,5 and 4 respectively; the second part has 2 digits, 7 and 5 respectively. Calculate Digit Verification of CAS Registry Number 30154-75: (7*3)+(6*0)+(5*1)+(4*5)+(3*4)+(2*7)+(1*5)=77 77 % 10 = 7 So 30154-75-7 is a valid CAS Registry Number.