1220038-91-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1220038-91-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,0,0,3 and 8 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1220038-91:
(9*1)+(8*2)+(7*2)+(6*0)+(5*0)+(4*3)+(3*8)+(2*9)+(1*1)=94
94 % 10 = 4
So 1220038-91-4 is a valid CAS Registry Number.