74231-59-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74231-59-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,2,3 and 1 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 74231-59:
(7*7)+(6*4)+(5*2)+(4*3)+(3*1)+(2*5)+(1*9)=117
117 % 10 = 7
So 74231-59-7 is a valid CAS Registry Number.