7218-22-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7218-22-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,2,1 and 8 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 7218-22:
(6*7)+(5*2)+(4*1)+(3*8)+(2*2)+(1*2)=86
86 % 10 = 6
So 7218-22-6 is a valid CAS Registry Number.