Mixtures of aromatic esters for marking or tagging organic products, marker compositions comprising the same and manufacturing methods thereof
US7825159B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2007 |
| Grant date | Nov 2, 2010 |
| Priority date | — |
| Expiry date | Dec 8, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K31/343
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention is directed to a mixture of at least two different alkylated phenolphthalein ester compounds. Specifically, the present invention is directed to a mixture of at least two different compounds of formula I:wherein R1 represents a straight chain alkyl group having 1 to 11 carbon atoms; R2 represents a hydrogen atom or a group of the formula C(O)R4 where R4 is a hydrogen atom or a straight chain alkyl group having 1 to 11 carbon atoms; X2-X5 independently represent hydrogen; X6-X13 is same or different, and represents hydrogen or a straight or branched chain alkyl group having 1 to 12 carbon atoms. It further relates to a marker composition containing said mixtures dissolved in a solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.