20156-76-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20156-76-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,1,5 and 6 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 20156-76:
(7*2)+(6*0)+(5*1)+(4*5)+(3*6)+(2*7)+(1*6)=77
77 % 10 = 7
So 20156-76-7 is a valid CAS Registry Number.