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Provide batch numbers separated by commas to download or request available product inserts, QC sheets, certificates of analysis, data packs, and GC-MS data.

Our free, searchable, GC-MS spectral database contains 70eV EI mass spectral data of 2,000+ of Cayman’s forensic drug standards.
DOWNLOAD THE DATABASERitalinic acid is an inactive, major metabolite of methylphenidate (Item No. 11639), a schedule II drug in the United States commonly used as a psychostimulant for the treatment of attention-deficit hyperactivity disorder, also known as ADHD.1 Ritalinic acid is reported to reach plasma concentrations of 1-2 orders of magnitude greater than that of the parent drug and has been monitored in urine to ensure compliance with treatment programs.2 This product is intended for forensic and biological research purposes.
WARNING This product is not for human or veterinary use.
1. Ethylphenidate formation in human subjects after the administration of a single dose of methylphenidate and ethanol. Drug Metab. Dispos. 28(6), 620-624 (2000).
2. Liquid chromatography-