667912-54-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 667912-54-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,7,9,1 and 2 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 667912-54:
(8*6)+(7*6)+(6*7)+(5*9)+(4*1)+(3*2)+(2*5)+(1*4)=201
201 % 10 = 1
So 667912-54-1 is a valid CAS Registry Number.