54693-61-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 54693-61-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,6,9 and 3 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 54693-61:
(7*5)+(6*4)+(5*6)+(4*9)+(3*3)+(2*6)+(1*1)=147
147 % 10 = 7
So 54693-61-7 is a valid CAS Registry Number.