654636-26-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 654636-26-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,5,4,6,3 and 6 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 654636-26:
(8*6)+(7*5)+(6*4)+(5*6)+(4*3)+(3*6)+(2*2)+(1*6)=177
177 % 10 = 7
So 654636-26-7 is a valid CAS Registry Number.