765838-53-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 765838-53-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,6,5,8,3 and 8 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 765838-53:
(8*7)+(7*6)+(6*5)+(5*8)+(4*3)+(3*8)+(2*5)+(1*3)=217
217 % 10 = 7
So 765838-53-7 is a valid CAS Registry Number.