DL-蛋氨酸 — additive cross-jurisdiction identity
Derived crosswalk of how one feed additive is named and authorised across three jurisdictions. No claim of regulatory equivalence is made — pairings are anchored on the substance identity, and the verdict states where the definitions actually diverge.
- Substance anchor: DL-蛋氨酸
- Verdict:
closest_with_differences
Per-jurisdiction entry
- 🇨🇳 CN — 公告2045
DL-蛋氨酸: DL-蛋氨酸 is listed in 表一 饲料添加剂品种目录 (category 氨基酸、氨基酸盐及其类似物 for amino acids / 矿物元素及其络（螯）合物 for chelates / 维生素及类维生素 for vitamins), scope 养殖动物 (all livestock and poultry). _(src: CN 公告2045)_ - 🇪🇺 EU — Reg 1831/2003
(EU) 2013/469: Commission Implementing Regulation (EU) No 469/2013 of 22 May 2013 concerning the authorisation of DL-methionine, DL-methionine sodium salt, hydroxy analogue of methionine, calcium salt of hydroxy analogue of methionine, isopropyl ester of hydroxy analogue of methionine, DL-methionine protected with copolymer vinylpyridine/styrene and DL-methionine protected with ethylcellulose as feed additives Text with EEA relevance _(src: EU (EU) 2013/469)_ - 🇺🇸 AAFCO (US) — Ch.6
57.28Metal Methionine Hydroxy Analogue Chelate: Metal Methionine Hydroxy Analogue Chelate is the product resulting from the reaction of a metal salt with 2-hydroxy-4-methylthiobutanoic acid (HMTBa), having a chelated molar ratio of one mole of metal to two moles of HMTBa to form coordinate covalent bonds. _(src: AAFCO OP 2024 Ch.6, code 57.28)_
Crosswalk verdict
CN 公告2045 and EU No 469/2013 authorise DL-methionine (and its sodium salt / hydroxy analogue) for all animal species. AAFCO OP 2024 Ch.6 does not list isolated DL-methionine as a feed ingredient; the closest methionine-source entry is Metal Methionine Hydroxy Analogue Chelate (57.28), a metal-chelated hydroxy analogue — a different chemical form. Verdict: CN↔EU equivalent; AAFCO diverges in chemical form.
Sources
- CN: 农业部公告第2045号 《饲料添加剂品种目录》 (first-hand; fujian compile txt, intra-cell line wraps normalised for verbatim quotation)
- EU: https://eur-lex.europa.eu/eli/reg_impl/2013/469/oj/eng (first-hand EUR-Lex, fetched 2026-08-07)
- AAFCO: OP 2024 Ch.6 code 57.28 (Metal Methionine Hydroxy Analogue Chelate)