Other
Oxygen-function amino-compounds: > Amino-acids, other than those containing more than one kind of oxygen function, and their esters; salts thereof: > Other: > Other: > Other: > Other
Duty Rate (from China)
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Products classified 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.
L-Phenylalanine
L-Phenylalanine is a precursor amino acid in aspartame production and nutritional products. Classified under HTS 2922.49.80.00 as an oxygen-function amino-acid without multiple oxygen types.
L-Histidine Base
L-Histidine Base serves in buffer solutions and allergy research supplements. HTS 2922.49.80.00 applies to this imidazole-containing amino acid with single carboxyl function.
L-Arginine Free Base
L-Arginine Free Base is used in nitric oxide supplements and wound healing formulations. Falls under HTS 2922.49.80.00 for basic amino acids with guanidino oxygen function limited to carboxyl.
Beta-Alanine Powder
Beta-Alanine Powder enhances muscle carnosine levels in performance supplements. Classified in HTS 2922.49.80.00 as a non-proteinogenic amino acid with single oxygen function.
L-Cysteine Hydrochloride
L-Cysteine Hydrochloride acts as a dough conditioner and reducing agent in food processing. HTS 2922.49.80.00 covers this thiol amino acid salt with carboxyl oxygen function.
L-Aspartic Acid
L-Aspartic Acid is used in aspartame synthesis and as a neurochemical precursor. Under HTS 2922.49.80.00 for dicarboxylic amino acids with single carboxyl classification.
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.
L-Serine
L-Serine is a polar amino acid in cell culture media and moisturizers. Classified HTS 2922.49.80.00 for hydroxy amino-acids with single function.
L-Alanine
L-Alanine serves in IV fluids and as sweetener in low-calorie products. HTS 2922.49.80.00 for simplest non-essential amino acid with carboxyl function.