Undecanoic acid,
4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,11-heptadecafluoro-,
2,3-dihydro-1H-inden-1-yl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 472954-91-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,7,2,9,5 and 4 respectively; the second part has 2 digits, 9 and 1 respectively. Calculate Digit Verification of CAS Registry Number 472954-91: (8*4)+(7*7)+(6*2)+(5*9)+(4*5)+(3*4)+(2*9)+(1*1)=189 189 % 10 = 9 So 472954-91-9 is a valid CAS Registry Number.