L-Proline
L-Proline supports collagen synthesis in cosmetics and supplements. HTS 2922.49.80.00 for cyclic amino acid with imino oxygen function treated as amino-acid.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If pyrrolidine ring isolates
Separated heterocyclics without amino function in 2934.
If in beauty cream formulations
Finished cosmetic products classified by end-use.
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Import Tips & Compliance
• Cosmetic grade certification; hygroscopic packaging; stability data sheets
Related Products under HTS 2922.49.80.00
DL-Methionine
DL-Methionine is a synthetic essential amino acid used primarily in animal feed formulations to supplement dietary protein. It falls under HTS 2922.49.80.00 as an amino acid with a single oxygen function (carboxyl group) and no additional kinds of oxygen functions. This classification applies to pure forms without complex ester or salt modifications beyond basic structure.
L-Threonine USP Grade
L-Threonine USP Grade is a pharmaceutical-grade essential amino acid used in nutritional supplements and parenteral nutrition solutions. Classified under HTS 2922.49.80.00 for amino-acids with oxygen-function limited to the carboxyl group, excluding those with multiple oxygen types. Meets USP standards for purity in medical applications.
L-Lysine Monohydrochloride
L-Lysine Monohydrochloride is the salt form of the essential amino acid lysine, widely used in poultry and swine feed. It qualifies for HTS 2922.49.80.00 as salts of amino-acids with single oxygen function, where inorganic salts follow the organic compound's heading per chapter note 3(C)(1).
L-Tryptophan Powder
L-Tryptophan Powder is an essential amino acid used in dietary supplements for sleep and mood support. Falls under HTS 2922.49.80.00 as a simple amino acid with carboxyl oxygen function only, distinct from heterocyclic derivatives in other headings.
DL-Valine Feed Grade
DL-Valine Feed Grade is a branched-chain amino acid supplementing livestock rations for muscle development. Classified in HTS 2922.49.80.00 for its amino acid structure with single carboxyl oxygen function, meeting chapter requirements for separate chemically defined compounds.
L-Isoleucine Pharmaceutical
L-Isoleucine Pharmaceutical is used in IV nutrition and recovery supplements for athletes. HTS 2922.49.80.00 covers this amino acid with its single oxygen-function carboxyl group, excluding multi-function compounds.