2939.63.00.00 - Lysergic acid and its salts

This HTS category, 2939.63.00.00, specifically classifies lysergic acid and its salts. Lysergic acid is a crucial precursor and a core chemical structure derived from ergot alkaloids. It is distinct from its more complex, naturally occurring derivatives that have been synthesized or isolated and are classified elsewhere. The salts of lysergic acid are also included here, typically formed to improve stability or solubility for various applications.

This classification is differentiated from its sibling categories by focusing on the base lysergic acid molecule and its simple salt forms, rather than specific, more complex ergot alkaloid derivatives. HTS 2939.61.00.00 covers ergometrine and its salts, while HTS 2939.62.00.00 covers ergotamine and its salts. These siblings represent specific, well-defined ergot alkaloid compounds with distinct chemical structures and pharmacological properties, whereas 2939.63.00.00 captures the fundamental lysergic acid moiety itself.

As this node represents a leaf classification, there are no further subdivisions. Therefore, classification under 2939.63.00.00 hinges on the precise chemical identity of the imported or exported substance being lysergic acid or a simple salt thereof. This excludes any finished pharmaceutical products or more complex derivatives that would fall under different HTS headings or subheadings based on their specific chemical structure and intended use.