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                                | Modafinil acid, 1.0 mg/mL | M-142 |  
                                | 1.0 mg/mL in Acetonitrile 
 Modafinil acid is the major metabolite of modafinil, an analeptic drug sold under the brand names Provigil® or Modavigil® and approved by the US FDA for the treatment of narcolepsy, shift work sleep disorder, and excessive daytime sleepiness. Modafinil, a well known nootropic drug, is often used as a performance-enhancing drug in academics and sports.
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