2-Chloro-1,1,1,2,4,4,5,5,5-nonafluoro-pentan-3-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 83654-41-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,6,5 and 4 respectively; the second part has 2 digits, 4 and 1 respectively. Calculate Digit Verification of CAS Registry Number 83654-41: (7*8)+(6*3)+(5*6)+(4*5)+(3*4)+(2*4)+(1*1)=145 145 % 10 = 5 So 83654-41-5 is a valid CAS Registry Number.