340040-91-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 340040-91-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,4,0,0,4 and 0 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 340040-91:
(8*3)+(7*4)+(6*0)+(5*0)+(4*4)+(3*0)+(2*9)+(1*1)=87
87 % 10 = 7
So 340040-91-7 is a valid CAS Registry Number.