1220638-77-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1220638-77-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,0,6,3 and 8 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1220638-77:
(9*1)+(8*2)+(7*2)+(6*0)+(5*6)+(4*3)+(3*8)+(2*7)+(1*7)=126
126 % 10 = 6
So 1220638-77-6 is a valid CAS Registry Number.