2903.99.15.00 - Triphenylmethyl chloride

This HTS category, specifically 2903.99.15.00, encompasses Triphenylmethyl chloride, also known as triphenylchloromethane or trityl chloride. This organic compound is characterized by a central carbon atom bonded to three phenyl groups and one chlorine atom. Its primary use is as a protecting group in organic synthesis, particularly for alcohols, due to its facile introduction and removal under specific reaction conditions.

This classification is distinct from its sibling categories by the specific chemical structure of Triphenylmethyl chloride. For instance, while other siblings might cover various halogenated aromatic hydrocarbons like substituted benzotrifluorides or dichlorobenzenes, this node is precisely defined for the trityl moiety attached to a chlorine atom. This specificity ensures accurate trade data recording and tariff application for this particular chemical intermediate.

As a leaf node within the HTS, 2903.99.15.00 does not have further subdivisions. Therefore, the classification is definitive for Triphenylmethyl chloride. Any variations in the halogen (e.g., bromide instead of chloride) or significant modifications to the phenyl rings would necessitate classification under a different HTS code, adhering to the principle of classifying goods based on their precise chemical identity and structure.