The CAS Registry Mumber 15048-95-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,5,0,4 and 8 respectively; the second part has 2 digits, 9 and 5 respectively. Calculate Digit Verification of CAS Registry Number 15048-95: (7*1)+(6*5)+(5*0)+(4*4)+(3*8)+(2*9)+(1*5)=100 100 % 10 = 0 So 15048-95-0 is a valid CAS Registry Number.