291772-85-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 291772-85-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,9,1,7,7 and 2 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 291772-85:
(8*2)+(7*9)+(6*1)+(5*7)+(4*7)+(3*2)+(2*8)+(1*5)=175
175 % 10 = 5
So 291772-85-5 is a valid CAS Registry Number.