126664-53-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 126664-53-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,6,6,6 and 4 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 126664-53:
(8*1)+(7*2)+(6*6)+(5*6)+(4*6)+(3*4)+(2*5)+(1*3)=137
137 % 10 = 7
So 126664-53-7 is a valid CAS Registry Number.