251922-69-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 251922-69-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,1,9,2 and 2 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 251922-69:
(8*2)+(7*5)+(6*1)+(5*9)+(4*2)+(3*2)+(2*6)+(1*9)=137
137 % 10 = 7
So 251922-69-7 is a valid CAS Registry Number.