256953-64-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 256953-64-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,6,9,5 and 3 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 256953-64:
(8*2)+(7*5)+(6*6)+(5*9)+(4*5)+(3*3)+(2*6)+(1*4)=177
177 % 10 = 7
So 256953-64-7 is a valid CAS Registry Number.