1213403-40-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1213403-40-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,3,4,0 and 3 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1213403-40:
(9*1)+(8*2)+(7*1)+(6*3)+(5*4)+(4*0)+(3*3)+(2*4)+(1*0)=87
87 % 10 = 7
So 1213403-40-7 is a valid CAS Registry Number.