167021-51-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 167021-51-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,7,0,2 and 1 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 167021-51:
(8*1)+(7*6)+(6*7)+(5*0)+(4*2)+(3*1)+(2*5)+(1*1)=114
114 % 10 = 4
So 167021-51-4 is a valid CAS Registry Number.