(2E,5Z,11E,14E,16E)-17-Phenyl-heptadeca-2,5,11,14,16-pentaene-7,9-diynoic acid methyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 82768-68-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,2,7,6 and 8 respectively; the second part has 2 digits, 6 and 8 respectively. Calculate Digit Verification of CAS Registry Number 82768-68: (7*8)+(6*2)+(5*7)+(4*6)+(3*8)+(2*6)+(1*8)=171 171 % 10 = 1 So 82768-68-1 is a valid CAS Registry Number.