The CAS Registry Mumber 125867-95-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,5,8,6 and 7 respectively; the second part has 2 digits, 9 and 5 respectively. Calculate Digit Verification of CAS Registry Number 125867-95: (8*1)+(7*2)+(6*5)+(5*8)+(4*6)+(3*7)+(2*9)+(1*5)=160 160 % 10 = 0 So 125867-95-0 is a valid CAS Registry Number.