The CAS Registry Mumber 95330-46-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,5,3,3 and 0 respectively; the second part has 2 digits, 4 and 6 respectively. Calculate Digit Verification of CAS Registry Number 95330-46: (7*9)+(6*5)+(5*3)+(4*3)+(3*0)+(2*4)+(1*6)=134 134 % 10 = 4 So 95330-46-4 is a valid CAS Registry Number.