21692-94-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21692-94-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,6,9 and 2 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 21692-94:
(7*2)+(6*1)+(5*6)+(4*9)+(3*2)+(2*9)+(1*4)=114
114 % 10 = 4
So 21692-94-4 is a valid CAS Registry Number.