3507.90.20.00 - Pencillin G amidase

This HTS category, 3507.90.20.00, specifically classifies Pencillin G amidase. Pencillin G amidase is a type of enzyme utilized in biochemical processes, primarily for the deacylation of penicillin G to produce 6-aminopenicillanic acid (6-APA), a crucial intermediate in the synthesis of semi-synthetic penicillins. Its specific application in pharmaceutical manufacturing distinguishes it from other general-purpose enzymes.

This particular subheading is a specific enumeration within the broader category of "Enzymes; prepared enzymes not elsewhere specified or included: Other." While other entries under 3507.90 might cover different prepared enzymes, this code is exclusively for Pencillin G amidase. The sibling category, 3507.90.70.00, covers all other prepared enzymes that do not fall under any specifically enumerated subheading.

As this is a leaf node in the HTS classification system, there are no further subcategories under 3507.90.20.00. Therefore, the classification is specific to Pencillin G amidase itself. When classifying, customs officials will consider the chemical identity and primary function of the enzyme to ensure accurate placement within this detailed heading.