C4H9NO3
119.12 g/mol
APIWarning
D-threonine
CAS632-20-2EC211-171-8
Category
API
Compound Class
Organic Acid
Primary Use
Pharmaceutical Raw Material
D-threonine is an essential amino acid used as an active pharmaceutical ingredient. It is the D-enantiomer of threonine and is employed in peptide synthesis and pharmaceutical manufacturing.
Active pharmaceutical ingredient for nutritional and peptide productsBuilding block in solid-phase peptide synthesis
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
ReferenceSame Category
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pharmaceutical raw material
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pharmaceutical raw material
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ReferenceSame Category
Metamizole magnesium
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pharmaceutical raw material
Referencestereoisomer of
L-threonine
CAS72-19-5
nutritional supplement and flavor additive
Referencestereoisomer of
Allo-D-threonine
CAS24830-94-2
research compound
Referencestereoisomer of
L-threonine hemihydrate
CAS6028-28-0
nutritional supplement and food additive
Safety Reference
Warning
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for D-threonine (CAS 632-20-2) is 2922.50.
HS code (international, 6-digit)
2922.50
EU CN code (8-digit)
2922 50 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
(2R,3S)-2-amino-3-hydroxybutanoic acid
InChIKey
AYFVYJQAPQTCCC-STHAYSLISA-N
SMILES
C[C@@H]([C@H](C(=O)O)N)O
Synonyms (18)
- (R)-Threonine
- D-Threonin
- D-Threonine (H-D-Thr-OH)
- D-Threonine, >=98% (TLC)
- D-thr
- D-threonine
- H-D-Thr-OH
- H-DL-Thr-OH
- Threonine, D-
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