221627-88-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 221627-88-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,6,2 and 7 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 221627-88:
(8*2)+(7*2)+(6*1)+(5*6)+(4*2)+(3*7)+(2*8)+(1*8)=119
119 % 10 = 9
So 221627-88-9 is a valid CAS Registry Number.