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L-Valine L-2-Aminoisovaleric acid 72-18-4
Formula:C5H11NO2
Molecular Weight:117.15
Deleted CAS:7004-03-7|16872-32-5
Synonyms:Valine,L- (8CI);(+)-2-Amino-3-methylbutyric acid;(2S)-2-Amino-3-methylbutanoic acid;(S)-2-Amino-3-methylbutanoic acid;(S)-Valine;(S)-a-Amino-b-methylbutyric acid;2-Amino-3-methylbutanoic acid;Butanoic acid,2-amino-3-methyl-, (S)-;L-(+)-a-Aminoisovaleric acid;L-a-Amino-b-methylbutyricacid;NSC 76038;Valine;H-Val-OH;
EINECS:200-773-6
Density:1.064 g/cm3
Melting Point:295-300 °C (subl.)(lit.)
Boiling Point:213.642 °C at 760 mmHg
Flash Point:83.008 °C
Solubility:85 g/L (20 °C) in water
Appearance:White crystalline powder
Test Items |
Specifications |
Appearance |
White to off-white powder |
Solubility |
Colorless & clear (c=5, 3N HCl) |
Specific Rotation [20/D] |
-26.5 to -29.0 Degree (c=8, 6N HCl) |
Loss on Drying |
Not more than 0.3% |
Residue on Ignition (Sulfate) |
Not more than 0.1% |
Chloride (Cl) |
Not more than 0.02% |
Sulfate (SO4) |
Not more than 0.03% |
Heavy Metals (Pb) |
Not more than 10ppm |
Iron (Fe) |
Not more than 10ppm |
Ammonium Salts (NH4) |
Not more than 0.02% |
Arsenic (As) |
Not more than 1ppm |
Other Amino Acid |
Not detected by TLC |
Assay |
98.5% to 101.0% |
L-Enantiomer |
Not more than 0.5% |
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