doxycycline alcohol interaction Four compounds, indolmycin BioAustralis, ref BIA- I1040, SPECS_C1 Specs Netherlands, 2 benzoic acid, PH000586 Vitas M Labs, and STK505786 Sigma- Aldrich, 2- hydroxy- 3 1H- indol- 3- yl butanoic acid, were received as dry powders 99 purity, dissolved in DMSO, and stored at either 20 C or room temperature.