The solubility of alcohols in water depends on the size of the carbon chain. Smaller alcohols such as methanol, ethanol, and propanol are highly soluble in water because they can form hydrogen bonds with water molecules. As the size of the carbon chain increases, the solubility in water decreases due to the increasing hydrophobicity of the molecule. 
Methylphenidate is a derivative of phenethylamine and belongs to the class of central nervous system (CNS) stimulants. According to the provided sources, methylphenidate is highly water-soluble and freely soluble in methanol and alcohol, but only slightly soluble in chloroform and acetone. However, the context does not provide information on the solubility of methylphenidate in ethanol specifically. 
In summary, the solubility of alcohols in polar and nonpolar solvents  can provide some insight into the solubility of methylphenidate in ethanol and H2O. Additionally, some suggest that methylphenidate is highly water-soluble and freely soluble in methanol and alcohol, but only slightly soluble in chloroform and acetone.
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