L-Methionine USP Grade
L-Methionine USP Grade is the natural levorotatory form of methionine, meeting United States Pharmacopeia standards for purity and use in medical and nutritional supplements. Classified under HTS 2930.40.00.00 as a separate chemically defined organo-sulfur compound.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If used solely as human pharmaceutical active ingredient
Medicinal amino acids may classify under Chapter 30 if put up for retail therapeutic use, overriding Chapter 29.
If in salt form like L-methionine sodium
Sulfur-containing organic salt derivatives classify under heading 2935 per chapter notes on salts.
If granulated for direct pet food incorporation
Processed into feed-grade granules shifts to prepared animal feed in Chapter 23.
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Import Tips & Compliance
• Provide USP certificate of analysis and FDA compliance docs for pharma entry; label with batch number and expiration; avoid dust contamination during shipping to prevent purity disputes
Related Products under HTS 2930.40.00.00
DL-Methionine
DL-Methionine is a synthetic racemic mixture of D- and L-methionine, a chemically defined organo-sulfur amino acid essential for animal nutrition. It falls under HTS 2930.40.00.00 as methionine, used primarily as a feed additive to supplement methionine-deficient diets in poultry and swine.
Methionine Feed Grade 99%
Methionine Feed Grade 99% is a high-purity powder formulation of DL-methionine designed for livestock nutrition, containing minimal impurities as per chapter note (a). It is classified under HTS 2930.40.00.00 for methionine organo-sulfur compounds.
Hydroxy Analog of Methionine (MHA)
2-Hydroxy-4-(methylthio)butanoic acid, known as MHA, is a liquid methionine analog functioning as a rumen-stable sulfur source for ruminant feed. Though chemically distinct, it is often associated with methionine classification under HTS 2930.40.00.00 for organo-sulfur feed compounds.
L-Methionine with Stabilizer
L-Methionine powder with added anticaking stabilizer for preservation during transport, as permitted by chapter note (f). This chemically defined organo-sulfur compound remains classified under HTS 2930.40.00.00.
Methionine Calcium Salt
Calcium salt of DL-methionine, an organo-sulfur compound where the salt form follows the parent methionine per chapter note on inorganic salts (C)(1). Classified under HTS 2930.40.00.00.
Dry Methionine Powder 98.5%
Dry DL-Methionine powder at 98.5% purity with minor impurities, qualifying as chemically defined under chapter note (a). Used in pet food formulations, classified under HTS 2930.40.00.00.