156331-05-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 156331-05-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,3,3 and 1 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 156331-05:
(8*1)+(7*5)+(6*6)+(5*3)+(4*3)+(3*1)+(2*0)+(1*5)=114
114 % 10 = 4
So 156331-05-4 is a valid CAS Registry Number.