Desheng L-Leucine CAS 61-90-5
USP/AJI standard
Description
Product Name: H-Leu-OH CAS#: 61-90-5
Synonyms: L-Leucine Molecular Formula: C6H13NO2
Molecular Weight: 131.17
purity>98.5%
Specifications: (standard: AJI92)
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Item
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Standard
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Analysis data
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Appearance
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White crystals or crystalline powder
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Conforms
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Specific rotation[α]20/D
(C=4 in 6N HCl)
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+14.9 to +16.0°
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14.91°
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State of solution
(Transmittance)
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Clear and colorless
Not less than 98.0%
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Clear
98.0%
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Chloride (Cl)
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Not more than 0.020%
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0.01%
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Ammonium (NH4)
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Not more than 0.02%
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<0.02%
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Sulfate (SO4)
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Not more than 0.020%
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0.005%
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Iron (Fe)
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Not more than 10ppm
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6ppm
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Heavy metal(Pb)
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Not more than 10ppm
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<0.02%
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Arsenic(As2O3)
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Not more than 1ppm
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<0.02%
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Other amino acids
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Chromatographically
Not detectable
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Conforms
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Loss on drying
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Not more than 0.20%
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0.2%
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Residue on ignition(sulfated)
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Not more than 0.10%
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0.08%
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Assay
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98.5 to101.0%
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99.0%
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pH
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5.5 to 6.5
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6.0
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