291772-11-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 291772-11-7 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, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 291772-11:
(8*2)+(7*9)+(6*1)+(5*7)+(4*7)+(3*2)+(2*1)+(1*1)=157
157 % 10 = 7
So 291772-11-7 is a valid CAS Registry Number.