Product

The Front Runner in
Enzyme Technology in Korea

Special amino acids

D-Amino acids are found in very small amounts in nature and some D-Amino acids are known to have its own biological effects in vivo. MH2 Biochemical has secured key technologies for manufacturing D-Amino acids through biological processes.

In particular, MH2 Biochemical D-threonine has high optical purity due to D-threonine aldolase which produces less than 5% of other isomers in the reaction. (A novel enzyme for production of D-threonine, and a method for sterospecific preparing D-threonine using the same, Korea Patent. 102207688, 102212488, the Korea Research Institute of Bioscience and Biotechnology)

A. Physicochemical properties
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CH3CH(NH2)COOH (2R)-2-aminopropanoic acid
CAS No. 338-69-2
Molecular formula C3H7NO2
FW 89.09
B. Product specification
Category Specification Note
Solubility in water Colorless & clear (c=5)
Specific rotation -14.3 ~ -15.2 (c= 4, 6M-HCl)
Loss on drying Not more than 0.3%
Residue on ignition (as sulfate) Not more than 0.1%
Chloride (Cl) Not more than 0.02%
Sulfate (SO4) Not more than 0.03%
Heavy metals (as Pb) Not more than 10ppm
Iron (Fe) Not more than 10ppm
Ammonium (NH4) Not more than 0.02%
Arsenic (As2O3) Not more than 1ppm
Other amino acids Not detected by T.L.C.
Assay 98.5% ~ 101.0%
L-Isomer Not more than 0.5%
Package size 1, 5, 10, 20kg
A. Physicochemical properties
...
H2NC(=NH)NH(CH2)3CH(NH2)COOH (2R)-2-amino-5-(diaminomethylideneamino) pentanoic acid
CAS No. 157-06-2
Molecular formula C6H14N4O2
FW 174.20
B. Product specification
Category Specification Note
Solubility in water Colorless & clear (c=5)
Specific rotation -26.9 ~ -27.9 (c= 8, 6M-HCl)
Loss on drying Not more than 0.5%
Residue on ignition (as sulfate) Not more than 0.2%
Chloride (Cl) Not more than 0.05%
Sulfate (SO4) Not more than 0.03%
Heavy metals (as Pb) Not more than 10ppm
Iron (Fe) Not more than 10ppm
Ammonium (NH4) Not more than 0.02%
Arsenic (As2O3) Not more than 1ppm
Other amino acids Not detected by T.L.C.
Assay 98.5% ~ 101.0%
L-Isomer Not more than 0.5%
Package size 1, 5, 10, 20kg
A. Physicochemical properties
...
H2NC(=NH)NH(CH2)3CH(NH2)COOH (2R)-2-amino-5-(diaminomethylideneamino) pentanoic acid;hydrochloride
CAS No. 627-75-8
Molecular formula C6H14N4O2·HCl
FW 210.66
B. Product specification
Category Specification Note
Solubility in water Colorless & clear (c=5)
Specific rotation -21.5 ~ -23.5 (c= 8, 6M-HCl)
Loss on drying Not more than 0.3%
Residue on ignition (as sulfate) Not more than 0.1%
Sulfate (SO4) Not more than 0.03%
Heavy metals (as Pb) Not more than 10ppm
Iron (Fe) Not more than 10ppm
Ammonium (NH4) Not more than 0.02%
Arsenic (As2O3) Not more than 1ppm
Other amino acids Not detected by T.L.C.
Assay 98.5% ~ 101.0%
L-Isomer Not more than 0.5%
Package size 1, 5, 10, 20kg
A. Physicochemical properties
...
HOOCCH2CH(NH2)COOH (2R)-2-aminobutanedioic acid
CAS No. 1783-96-6
Molecular formula C4H7NO4
FW 133.10
B. Product specification
Category Specification Note
Solubility in 3M-HCl Colorless & clear (c=5)
Specific rotation -24.5v ~ -25.7 (c= 8, 6M-HCl)
Loss on drying Not more than 0.3%
Residue on ignition (as sulfate) Not more than 0.1%
Chloride (Cl) Not more than 0.03%
Sulfate (SO4) Not more than 0.03%
Heavy metals (as Pb) Not more than 10ppm
Iron (Fe) Not more than 10ppm
Ammonium (NH4) Not more than 0.02%
Arsenic (As2O3) Not more than 1ppm
Other amino acids Not detected by T.L.C.
Assay 98.5% ~ 101.0%
L-Isomer Not more than 0.5%
Package size 1, 5, 10, 20kg
A. Physicochemical properties
...
HOOCCH2CH2CH(NH2)COOH (2R)-2-aminopentanedioic acid
CAS No. 6893-26-1
Molecular formula C5H9NO4
FW 147.13
B. Product specification
Category Specification Note
Solubility in 3M-HCl Colorless & clear (c=5)
Specific rotation -31.0 ~-32.5 (c= 10, 2M-HCl)
Loss on drying Not more than 0.3%
Residue on ignition (as sulfate) Not more than 0.1%
Chloride (Cl) Not more than 0.02%
Sulfate (SO4) Not more than 0.05%
Heavy metals (as Pb) Not more than 10ppm
Iron (Fe) Not more than 10ppm
Ammonium (NH4) Not more than 0.02%
Arsenic (As2O3) Not more than 1ppm
Other amino acids Not detected by T.L.C.
Assay 98.5% ~ 101.0%
L-Isomer Not more than 0.5%
Package size 1, 5, 10, 20kg
A. Physicochemical properties
...
H2N(CH2)4CH(NH2)COOH·HCl (2R)-2,6-diaminohexanoic acid;hydrochloride
CAS No. 7274-88-6
Molecular formula C6H14N2O2·HCl
FW 182.65
B. Product specification
Category Specification Note
Solubility in water Colorless & clear (c=5)
Specific rotation -20.7 ~ -21.7 (c=8, 6M-HCl)
Loss on drying Not more than 1.0%
Residue on ignition (as sulfate) Not more than 0.1%
Sulfate (SO4) Not more than 0.03%
Heavy metals (as Pb) Not more than 10ppm
Iron (Fe) Not more than 10ppm
Ammonium (NH4) Not more than 0.02%
Arsenic (As2O3) Not more than 1ppm
Other amino acids Not detected by T.L.C.
Assay 98.5% ~ 101.0%
L-Isomer Not more than 0.5%
Package size 1, 5, 10, 20kg
A. Physicochemical properties
...
H2N(CH2)3CH(NH2)COOH·HCl (2R)-2,5-diaminopentanoic acid;hydrochloride
CAS No. 16682-12-5
Molecular formula C5H12N2O2·HCl
FW 168.62
B. Product specification
Category Specification Note
Solubility in water Colorless & clear (c=5)
Specific rotation -23.0 ~ -24.5 (c= 4, 6M-HCl)
Loss on drying Not more than 0.3%
Residue on ignition (as sulfate) Not more than 0.1%
Sulfate (SO4) Not more than 0.03%
Heavy metals (as Pb) Not more than 10ppm
Iron (Fe) Not more than 10ppm
Ammonium (NH4) Not more than 0.02%
Arsenic (As2O3) Not more than 1ppm
Other amino acids Not detected by T.L.C.
Assay 98.5% ~ 101.0%
L-Isomer Not more than 0.5%
Package size 1, 5, 10, 20kg
A. Physicochemical properties
...
CH3CHOHCH(NH2)COOH (2R,3S)-2-amino-3-hydroxybutanoic acid
CAS No. 632-20-2
Molecular formula C4H9NO3
FW 119.12
B. Product specification
Category Specification Note
Solubility in water Colorless & clear (c=5)
Specific rotation +27.0 ~ +29.0 (c= 6, water)
Loss on drying Not more than 0.3%
Residue on ignition (as sulfate) Not more than 0.1%
Chloride (Cl) Not more than 0.02%
Sulfate (SO4) Not more than 0.03%
Heavy metals (as Pb) Not more than 10ppm
Iron (Fe) Not more than 10ppm
Ammonium (NH4) Not more than 0.02%
Arsenic (As2O3) Not more than 1ppm
Other amino acids Not detected by T.L.C.
Assay 98.5% ~ 101.0%
L-Isomer Not more than 0.5%
Package size 1, 5, 10, 20kg