129056-57-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 129056-57-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,0,5 and 6 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 129056-57:
(8*1)+(7*2)+(6*9)+(5*0)+(4*5)+(3*6)+(2*5)+(1*7)=131
131 % 10 = 1
So 129056-57-1 is a valid CAS Registry Number.