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L-Threonine (Feed Grade)

L-Threonine (Feed Grade)
L-Threonine (Feed Grade)
Product Code : 197
Product Description

CAS No.: 72-19-5                                

Molecular Formula: C4H9NO3                Molecular Weight: 119.12


L-Threonine is an α-amino acid with the chemical formula HO2CCH(NH2)CH(OH)CH3. Its codons are ACU, ACA, ACC, and ACG. This essential amino acid is classified as polar. Together with serine and tyrosine, L-Threonine is one of three proteinogenic amino acids bearing an alcohol group.

The L-Threonine residue is susceptible to numerous posttranslational modifications. The hydroxy side chain can undergo O-linked Glycosylation. In addition, L-Threonine residues undergo phosphorylation through the action of a L-Threonine kinase. In its phosphorylated form, it can be referred to as phosphothreonine.





White or light-brown crystal or powder

Loss on Drying

1.0% max

Residues on Ignition

0.5% max


98.5% min

Specific Rotation


Heavy Metals

10ppm max

Arsenic (As)

2ppm max




L-Threonine is an essential amino acid that is added to the diet of pigs and poultry in order to exactly match the balanced amino acid requirement of the animals. In practice, L-Threonine is the second limiting amino acid for pigs and the third for poultry. Even in the low protein diets with such balanced L-Threonine content, L-Threonine can optimize growth performance and decrease the excretion of nitrogen. L-Threonine is cost-effective and environment friendly


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