(E)-3-(6,7,9,10,12,13,15,16-Octahydro-5,8,11,14,17-pentaoxa-benzocyclopentadecen-2-yl)-but-2-enoic acid ethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 99809-84-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,8,0 and 9 respectively; the second part has 2 digits, 8 and 4 respectively. Calculate Digit Verification of CAS Registry Number 99809-84: (7*9)+(6*9)+(5*8)+(4*0)+(3*9)+(2*8)+(1*4)=204 204 % 10 = 4 So 99809-84-4 is a valid CAS Registry Number.