1284280-42-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1284280-42-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,8,4,2,8 and 0 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1284280-42:
(9*1)+(8*2)+(7*8)+(6*4)+(5*2)+(4*8)+(3*0)+(2*4)+(1*2)=157
157 % 10 = 7
So 1284280-42-7 is a valid CAS Registry Number.