129749-87-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 129749-87-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,7,4 and 9 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 129749-87:
(8*1)+(7*2)+(6*9)+(5*7)+(4*4)+(3*9)+(2*8)+(1*7)=177
177 % 10 = 7
So 129749-87-7 is a valid CAS Registry Number.