76939-20-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 76939-20-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,6,9,3 and 9 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 76939-20:
(7*7)+(6*6)+(5*9)+(4*3)+(3*9)+(2*2)+(1*0)=173
173 % 10 = 3
So 76939-20-3 is a valid CAS Registry Number.