SHEET /m/threonine · PubChem CID 6288 · CAS 72-19-5 · REV 2026.07
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Threonine
from sourceC4H9NO3 · 119.12 g/mol
L-Threonin · L-thr
What is Threonine?
An essential amino acid, unusually abundant in mucus and in the antibodies that line the gut. Threonine (C4H9NO3, 119 g/mol) is an amino acid that occurs naturally in the human body. from source
CategoryBody
LeaderboardsBiggest
Fig. 1 · 2D structure RDKit
SMILES
C[C@H]([C@@H](C(=O)O)N)OWhere you'll find it
Your own body makes this one. It is not an ingredient you buy. See the rest of the body group.
Toxicity & hazards
Toxicity · LD50
3,098 mg/kg · very low toxicity · LD50 rat other from source
Keep roaming
Where Threonine leads
Relatedcomputed
Valine63% similarBoth carry a carboxylic acid and an amine group.Alanine56% similarBoth carry a carboxylic acid and an amine group.Isoleucine52% similarBoth carry a carboxylic acid and an amine group.Lactic acid50% similarBoth carry an alcohol and a carboxylic acid group.Leucine42% similarBoth carry a carboxylic acid and an amine group.Tartaric acid37% similarBoth carry an alcohol and a carboxylic acid group.