Wu han yuan cheng
L-tryptophan molecular formula: c11h12n2o2 molecular weight: 204.23 cas :73-22-3 appearance: white crystal or crystalline powder, slight odor, taste bitter. content: 98.5% to 101.5% melting point: 289 ° c, slightly soluble in water, insoluble in ethanol. specific rotation: -29.4 ° ~ -32.8 ° chloride: ≤ 0.05% sulfate (so4): ≤ 0.03% iron salts (fe): ≤ 0.003% heavy metals (pb): ≤ 15ppm arsenic: ≤ 1.5 ppm loss on drying: ≤ 0.3% residue on ignition: ≤ 0.1% ph: 5.5 ~ 7.0 storage and transportation (storeage): store in a cool dry place use: l-tryptophan is the human body can not synthesize essential amino acids. the food industry is mainly used for food and nutrition supplements. usp grade l-threonine used in the preparation of compound amino acid transfusion and amino acid preparations packaging: 25 kg / cardboard drum
Reviewed by 1 Users
The goods were received on time and in full, the sellers were easy and pleasant to communicate with, attentive to details, all requests were fulfilled, the quality of the goods received was excellent
The goods were received on time and in full, the sellers were easy and pleasant to communicate with, attentive to details, all requests were fulfilled, the quality of the goods received was excellent
The goods were received on time and in full, the sellers were easy and pleasant to communicate with, attentive to details, all requests were fulfilled, the quality of the goods received was excellent
