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L-Tyrosine, 3-hydroxy-a-methyl-, hydrate (2:3) 41372-08-1 L-Tyrosine, 3-hydroxy-a-methyl-, hydrate (2:3) Price
Molecular formula:C10H13NO4·3/2H2O | Cas No.:41372-08-1 | |
Item | Specification | Test result |
1.Descriotion | Fine powder | conforms |
2.Colour | White | conforms |
3.Solubility | Slightly soluble in water,a little soluble in ethyl,alcohol,practically insoluble in ethyl ether,very soluble in hydrochloric acids. | conforms |
4.Identification | IR,UV,Color reaction,DSC | conforms |
5.Specific optical rotation | -25°- -28° | -25.0° |
6.Acidity(0.1N NaOH) | ≤0.50ml/g | <0.50ml/g |
7.Water(K.F.) | 10.0-13.0% | 10.6% |
8.Residue on ignition | ≤0.10% | 0.09% |
9.Heavy metals | ≤10PPM | <10PPM |
10.3-o-Methyl methyldopa | ≤0.50% | <0.1% |
11.Organic volatile impurities |
Benzene:≤2ppm |
conforms |
12.Apparent density | Maximum 0.70g/ml(determinated with 30 g of the sample.In test tube of 100ml,after 5 falls in the vertical of a height of 5cm) | 0.70g/ml |
13.granclometry | 90% Particles size between 15-400μm | conforms |
14.iron | ≤5PPM | <5PPM |
15.Assay(on dried basis) | 98.0% TO 101.0% | 98.8% |
Conclusion: |
The materials complies with the specification USP24. |
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