53991-76-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 53991-76-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,3,9,9 and 1 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 53991-76:
(7*5)+(6*3)+(5*9)+(4*9)+(3*1)+(2*7)+(1*6)=157
157 % 10 = 7
So 53991-76-7 is a valid CAS Registry Number.