320422-55-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 320422-55-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,2,0,4,2 and 2 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 320422-55:
(8*3)+(7*2)+(6*0)+(5*4)+(4*2)+(3*2)+(2*5)+(1*5)=87
87 % 10 = 7
So 320422-55-7 is a valid CAS Registry Number.