21679-94-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21679-94-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,6,7 and 9 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 21679-94:
(7*2)+(6*1)+(5*6)+(4*7)+(3*9)+(2*9)+(1*4)=127
127 % 10 = 7
So 21679-94-7 is a valid CAS Registry Number.