133789-74-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 133789-74-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,7,8 and 9 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 133789-74:
(8*1)+(7*3)+(6*3)+(5*7)+(4*8)+(3*9)+(2*7)+(1*4)=159
159 % 10 = 9
So 133789-74-9 is a valid CAS Registry Number.