438220-92-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 438220-92-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,3,8,2,2 and 0 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 438220-92:
(8*4)+(7*3)+(6*8)+(5*2)+(4*2)+(3*0)+(2*9)+(1*2)=139
139 % 10 = 9
So 438220-92-9 is a valid CAS Registry Number.