805977-21-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 805977-21-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,0,5,9,7 and 7 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 805977-21:
(8*8)+(7*0)+(6*5)+(5*9)+(4*7)+(3*7)+(2*2)+(1*1)=193
193 % 10 = 3
So 805977-21-3 is a valid CAS Registry Number.