12757-18-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 12757-18-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,2,7,5 and 7 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 12757-18:
(7*1)+(6*2)+(5*7)+(4*5)+(3*7)+(2*1)+(1*8)=105
105 % 10 = 5
So 12757-18-5 is a valid CAS Registry Number.