D-Proline Cas: 344-25-2
| Catalog Number | xwm 91294 |
| Khoom npe | D-Proline |
| CAS | 344-25-2 : kuv |
| Molecular Formula | C5H9 NPO 2 |
| Molecular Luj | 115.13 Nws |
| Cov ntaub ntawv khaws cia | Ambient |
| Harmonized tariff Code | 2933980 :ib |
Khoom Specification
| Qhov tshwm sim | Dawb mus rau dawb crystalline hmoov |
| Assay | 99% min |
| Kev sib hloov tshwj xeeb | +84.5 txog +86.5 deg |
| AS | <2 ppm |
| pH | 5.9-6.9 |
| Fe | <10ppm |
| Poob rau ziab | <0.5% |
| Chloride (Cl) | <0.020% |
| Sulfate | <0.020% |
| Residue ntawm Ignition | <0.5% |
| NH4 | <0.02% |
| Heavy Metals (Pb) | <10ppm |
D-Proline yog cov organic acid uas tau muab faib ua cov proteinogenic amino acid (siv hauv biosynthesis ntawm cov protein), txawm hais tias nws tsis muaj cov amino pawg -NH2 tab sis yog qhov thib ob amine.Qhov thib ob amine nitrogen yog nyob rau hauv protonated NH2 + daim ntawv nyob rau hauv biological mob, thaum lub carboxy pawg nyob rau hauv deprotonated −COO- daim ntawv.Cov "sab saw" los ntawm α carbon txuas mus rau nitrogen tsim ib lub voj pyrrolidine, faib nws li aliphatic amino acid.Nws tsis yog qhov tseem ceeb hauv tib neeg, txhais tau tias lub cev tuaj yeem tsim nws los ntawm cov amino acid uas tsis tseem ceeb L-glutamate.Nws yog encoded los ntawm tag nrho cov codons pib nrog CC (CCU, CCC, CCA, thiab CCG).
D-Proline yog tib cov proteinogenic amino acid uas yog ib qho thib ob amine, raws li cov nitrogen atom txuas ob qho tib si rau α-carbon thiab rau cov saw ntawm peb cov pa roj carbon monoxide uas ua rau lub voj voog.
Proline thiab nws cov derivatives feem ntau yog siv los ua asymmetric catalysts hauv proline organocatalysis cov tshuaj tiv thaiv.CBS txo qis thiab proline catalysed aldol condensation yog cov piv txwv tseem ceeb.Nyob rau hauv brewing, cov proteins uas nplua nuj nyob rau hauv proline ua ke nrog polyphenols los tsim haze (turbidity).D-Proline yog ib qho osmoprotectant thiab yog li ntawd yog siv nyob rau hauv ntau daim ntawv thov biotechnological.Kev loj hlob nruab nrab siv rau hauv cov nroj tsuag kab lis kev cai yuav ntxiv nrog proline.Qhov no tuaj yeem ua rau muaj kev loj hlob ntxiv, tej zaum vim tias nws pab cov nroj tsuag zam kev ntxhov siab ntawm cov ntaub so ntswg kab lis kev cai.Rau proline lub luag haujlwm hauv kev ntxhov siab ntawm cov nroj tsuag, kev ua haujlwm lom neeg.
