|Jmol-3D images||Image 1|
|Molar mass||289.33 g mol−1|
|Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)|
|(what is: / ?)|
Benzoylecgonine is used as the main pharmaceutical ingredient in the prescription drug Esterom, a topical solution used for the relief of muscle pain.
Benzoylecgonine is the compound tested for in most substantive cocaine urinalyses. It is the corresponding carboxylic acid of cocaine, its methyl ester. It is formed in the liver by the metabolism of cocaine, catalysed by carboxylesterases, and subsequently excreted in the urine. It can be found in the urine for considerably longer than the cocaine itself which is generally cleared out within 5 days. Small amounts may be traced back to certain OTC (over the counter) medications, after having been metabolized in the liver.
Presence in drinking water
Benzoylecgonine is sometimes found in drinking water supplies. In 2005, scientists found surprisingly large quantities of benzoylecgonine in Italy's Po River and used its concentration to estimate the number of cocaine users in the region. In 2006, a similar study was performed in the Swiss ski town of Saint-Moritz using waste water to estimate the daily cocaine consumption of the population. A study done in the United Kingdom found traces of benzoylecgonine in the country's drinking water supply, along with carbamazepine (an anticonvulsant) and ibuprofen (a common non-steroidal anti-inflammatory drug), although the study noted that the amount of each compound present was several orders of magnitude lower than the therapeutic dose and therefore did not pose a risk to the population.
- "Italian river 'full of cocaine'". BBC News. 5 August 2005. Retrieved 11 May 2014.
- "Tant de coke ? Stupéfiant !". Courrier International (in French). 2 February 2006. Retrieved 11 May 2014.
- Withnall, Adam (11 May 2014). "Cocaine use in Britain so high it has contaminated our drinking water, report shows". The Independent. Retrieved 11 May 2014.