214557-80-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 214557-80-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,4,5,5 and 7 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 214557-80:
(8*2)+(7*1)+(6*4)+(5*5)+(4*5)+(3*7)+(2*8)+(1*0)=129
129 % 10 = 9
So 214557-80-9 is a valid CAS Registry Number.