4312-18-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4312-18-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,3,1 and 2 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 4312-18:
(6*4)+(5*3)+(4*1)+(3*2)+(2*1)+(1*8)=59
59 % 10 = 9
So 4312-18-9 is a valid CAS Registry Number.