20916-29-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20916-29-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,9,1 and 6 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 20916-29:
(7*2)+(6*0)+(5*9)+(4*1)+(3*6)+(2*2)+(1*9)=94
94 % 10 = 4
So 20916-29-4 is a valid CAS Registry Number.