Dear Vladimira

Thymol is freely available in the market.  As most of the research is based on using this standard for any analytical method development. As it is stable in its pure form.

Thank you Neeraj

Yes, you are right, we use thymol standard for analysis. We need thymol-glucuronide and thymol-sulfate standards for next step. 

HI

I can introduce some plants with high percent of thymol 

J Chromatogr B Analyt Technol Biomed Life Sci. 2012 Sep 15;905:75-84. doi: 10.1016/j.jchromb.2012.07.040. 

http://www.ncbi.nlm.nih.gov/pubmed/22939267

Thymol O-β-D-Glucuronide: 

https://www.trc-canada.com/detail.php?CatNum=T413050&CAS=7702-71-8&Chemical_Name=Thymol%20O-%CE%B2-D-Glucuronide&Mol_Formula=C16H22O7&Synonym=5-Methyl-2-(1-methylethyl)phenyl%20%CE%B2-D-Glucopyranosiduronic%20Acid 

Thymol Sulfate Potassium Salt:

https://www.trc-canada.com/detail.php?CatNum=T413075&CAS=172265-90-6&Chemical_Name=Thymol%20Sulfate%20Potassium%20Salt&Mol_Formula=C10H13KO4S&Synonym=5-Methyl-2-(1-methylethyl)phenol%201-(Hydrogen%20sulfate)%20Potassium%20Salt;%205-Methyl-2-(1-methylethyl)phenol%20Hydrogen%20Sulfate%20Potassium%20Salt

Hi,

You may make inquiry at Alfa Chemistry, they offer kinds of chemical for research use.

https://www.alfa-chemistry.com/order.htm