L-Tyrosine
Dawb crstals los yog crystalline hmoov.Dawb soluble nyob rau hauv formic acid, me ntsis soluble nyob rau hauv dej, xyaum insoluble nyob rau hauv ethanol thiab ether.Dissolve nyob rau hauv dilute hydrochloric acid thiab dilute nitric acid.Ib cag los ntawm kev ua cov proteinogenic amino acid, tyrosine muaj lub luag haujlwm tshwj xeeb los ntawm kev tsim txiaj ntawm phenol functionality.Nws tshwm sim nyob rau hauv cov proteins uas yog ib feem ntawm cov teeb liab transduction txheej txheem.Nws ua haujlwm ns ua tus txais ntawm phosphate pawg uas tau pauv los ntawm txoj kev ntawm cov protein kinases (hu ua receptor tyrosine kinases).Phosphorylation ntawm pawg hydroxyl hloov cov kev ua ntawm lub hom phiaj protein.
| Cov khoom | Cov qauv |
| Kev txheeb xyuas | Infrared Absorption |
| Kev sib hloov tshwj xeeb | -9.8 ° rau -11.2 ° |
| Poob rau ziab | 0.3% Max |
| Residue ntawm ignition | 0.4% Max |
| Chloride | 0.04% Max |
| Sulfate | 0.04% Max |
| Hlau | 0.003% Max |
| Hnyav Hlau | 0.0015% Max |
| Tus kheej impurity | 0.5% Max |
| Tag nrho impurity | 2.0% Max |
| Organic volatile impurities | Ua tau raws li qhov yuav tsum tau ua |
| Assay | 98.5% -101.5% |
Cia: nyob rau hauv qhuav, txias, thiab ntxoov ntxoo nrog thawj ntim, tsis txhob ya raws, khaws cia ntawm chav tsev kub.
Txee lub neejib: 48oy
Pob: hauv25kg / hnab
kev xa khoom:ces
1. Koj cov nqe lus them nqi yog dab tsi?
T / T lossis L / C.
2. Koj lub sijhawm xa khoom yog dab tsi?
Feem ntau peb yuav npaj cov khoom xa tuaj hauv 7-15 hnub.
3. Yuav ua li cas txog kev ntim khoom?
Feem ntau peb muab cov ntim raws li 25 kg / hnab lossis thawv.Tau kawg, yog tias koj muaj cov cai tshwj xeeb rau lawv, peb yuav ua raws li koj.
4. Yuav ua li cas txog qhov siv tau ntawm cov khoom?
Raws li cov khoom koj xaj.
5. Koj muab cov ntaub ntawv dab tsi?
Feem ntau, peb muab Commerical Invoice, Packing List, Bill of loading, COA, Health certificate thiab Origin certificate.Yog tias koj lub lag luam muaj cov kev cai tshwj xeeb, qhia rau peb paub.
6. Qhov chaw nres nkoj yog dab tsi?
Feem ntau yog Shanghai, Qingdao lossis Tianjin.
