4231-92-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4231-92-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,2,3 and 1 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 4231-92:
(6*4)+(5*2)+(4*3)+(3*1)+(2*9)+(1*2)=69
69 % 10 = 9
So 4231-92-9 is a valid CAS Registry Number.