219312-97-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 219312-97-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,9,3,1 and 2 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 219312-97:
(8*2)+(7*1)+(6*9)+(5*3)+(4*1)+(3*2)+(2*9)+(1*7)=127
127 % 10 = 7
So 219312-97-7 is a valid CAS Registry Number.