L-Threonine CAS NO.72-19-5

L-Tyrosine Chemical Name： 3-(4-Hydroxyphenyl)-L-alanine Structure Formula： Molecular Formula： C9H11NO3 Molecular Weight： 181.19 …

L-Tyrosine Chemical Name： 3-(4-Hydroxyphenyl)-L-alanine Structure Formula： Molecular Formula： C9H11NO3 Molecular Weight： 181.19 Cas No： [60-18-4] Characteristics： White, styli form crystals with bitterness, soluble in dilute acids or base Quality Standards： USP24, AJI97 and etc. Item Specifications USP24 AJI97 Appearance White crystals or crystalline powder; tasteless Assay,% 98.5~101.5 99.0~101.0 Specific optical rotation -9.8°~ -11.2° -11.3°~ -12.1° Transmittance, % - - - ≥98.0 Heavy Metals (as Pb), % ≤0.001 ≤0.001 pH value - - - 5.0~6.5 Loss on drying, % ≤0.3 ≤0.2 Residue on ignition, % ≤0.4 ≤0.1 Chloride (as Cl),% ≤0.04 ≤0.02 Ammonium (as NH4),% - - - ≤0.02 Sulfate (as SO4), % ≤0.04 ≤0.02 Iron, % ≤0.003 ≤0.001 Arsenic (as As), % ≤0.0001 ≤0.0001 Other amino acids - - - Not detd. Organic volatile impurities Meets the requirement - - - The Characteristics and Uses： One of essential materials to prepare all kinds of medicine such as L-topa Package and Transport： Packed with a polyethylene bag for the inner layer and a Kraft paper board barrel for the outer layer, net weight 25kg/drum. Packaging may be arranged according to the requirement of the client. Handle with care in order to avoid damaging the package. Protect them from sunshine and rain. Do not transport them together with poisonous or harmful goods. This product is a non-dangerous product and can be transported as a general chemical product. Storage： Store in cool, shaded, dry and clean places. Do not store it together with poisonous or harmful goods in order to avoid pollution. The limit of retained quality for two years.