(E,E,E,E,E)-5,9,13,17,21-pentamethyl-23-[(tetrahydro-2H-pyran-2-yl)oxy]tricosa-5,9,13,17,21-pentaenoic acid is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 314739-89-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,1,4,7,3 and 9 respectively; the second part has 2 digits, 8 and 9 respectively. Calculate Digit Verification of CAS Registry Number 314739-89: (8*3)+(7*1)+(6*4)+(5*7)+(4*3)+(3*9)+(2*8)+(1*9)=154 154 % 10 = 4 So 314739-89-4 is a valid CAS Registry Number.