93431-77-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 93431-77-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,3,4,3 and 1 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 93431-77:
(7*9)+(6*3)+(5*4)+(4*3)+(3*1)+(2*7)+(1*7)=137
137 % 10 = 7
So 93431-77-7 is a valid CAS Registry Number.