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L- Tyrosine is an alpha-L-amino acid, used in the biosynthesis of proteins. It contains an alpha-amino group, an alpha carboxylic acid group, and a side chain attached to the alpha carbon.
Items | Specification | Test Methods |
---|---|---|
Physical Analysis | ||
Description | Powder | Organoleptic |
Color | White | Organoleptic |
Odor | Characteristic | Organoleptic |
Taste | Characteristic | Organoleptic |
Mesh size | 99%Passes through #40 mesh | USP<786> |
Loss on drying | NMT 5.0% w/w | USP<731> |
Total ash | NMT 5.0% w/w | USP<561> |
Related Substance | Any individual Impurity: NMT 0.50% Total Impurities: NMT2.0% | USP |
Iron | 30ppm | USP<241> |
Sulfates | 400ppm | USP<221> |
pH | 5.0 to 6.5 | USP<791> |
Chlorides | 400ppm | USP<221> |
Assay | 98.5%-101.5% | HPLC |
Specific Rotation | -9.8° to -11.2° | USP<781> |
Total Heavy Metals | NMT 10 ppm | USP<231> |
Lead | NMT 3ppm | USP<232> |
Arsenic | NMT 1.5 ppm | USP<232> |
Mercury | NMT 0.1ppm | USP<232> |
Cadmium | NMT 1 ppm | USP<232> |
Microbiology Test | ||
Total Plate Count | NMT 100,000 cfu/g | USP<61> |
Yeast & Mold | NMT 1000 cfu/g | USP<61> |
E. Coli | Absent | USP<62> |
Salmonella | Negative | USP<62> |
Coliforms | Negative | USP<62> |
Staphylococcus aureus | Negative | USP<62> |
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