1787-20-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1787-20-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,7,8 and 7 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1787-20:
(6*1)+(5*7)+(4*8)+(3*7)+(2*2)+(1*0)=98
98 % 10 = 8
So 1787-20-8 is a valid CAS Registry Number.