N-Acetylneuraminic acid CAS 131-48-6

Ntseeg Tshuaj yog ib tug ua Tuam Tshoj N-Acetylneuraminic acid CAS 131-48-6 chaw tsim tshuaj paus, tsum thiab exporter. Ua raws li kev ua raws li cov khoom zoo tshaj plaws, kom peb cov N-Acetylneuraminic acid CAS 131-48-6 tau txaus siab los ntawm ntau tus neeg siv khoom. Shandong Ntseeg

Peb zoo ntawm qhov zoo ntawm cov khoom siv tshuaj lom neeg hauv thaj chaw. Peb cov khoom raug xa tawm mus rau Tebchaws Europe, Tebchaws Meskas, Nyiv, Kaus Lim Qab Teb, Sab Hnub Tuaj Asia thiab lwm lub tebchaws thiab cheeb tsam. Nrog rau kev tshawb fawb thiab thev naus laus zis raws li kev qhia, kev ncaj ncees raws li lub hauv paus, zoo li lub neej, thiab tso siab rau lub tswv yim kev lag luam ntawm kev tsim kho tshiab thiab kev loj hlob, peb cia siab tias yuav tsim kev sib pauv thiab kev koom tes nrog cov neeg siv khoom hauv tsev thiab txawv teb chaws los tsim kev vam meej!

N-Acetylneuraminic acid CAS 131-48-6 Tshuaj Specification

N-Acetylneuraminic acid CAS 131-48-6 Cov Khoom Siv Tshuaj

Melting point 184-186 â
Tshwj xeeb ceev -32 º (c = 2, dej)
Boiling point 449.56 ⢠( kwv yees ntxhib )
Density 1.3580 (kwv yees ntxhib)
Refractive index -32 ° (c = 1, H2O
Cia tej yam kev mob -20 ° C
Solubility 50g / l (20 â º )
Acidity coefficient (PKA) 2.41 ± 0.54 (tus nqi kwv yees)
Morphology, crystallization
Xim: dawb

N-Acetylneuraminic acid CAS 131-48-6 Daim ntawv thov

N-acetylneuraminic acid sialic acid (N-acyl neuraminic acid) yog cov suab thaj ntau tshaj plaws nyob rau hauv cov xwm txheej, uas yog tsim los ntawm glycoproteins, glycolipids los yog cov kab mob capsule tshuaj nyob rau hauv cov tsiaj cell membranes los yog secretions. Hauv glycoproteins lossis glycolipids, pawg ketone ntawm txoj hauj lwm 2 tsim ib daim ntawv cog lus glycosidic, uas ua rau nws nyob ntawm qhov tsis txo qis ntawm cov piam thaj sab hauv. Nws cov nqi tsis zoo lossis cov qauv tshuaj tshwj xeeb ua rau nws muaj ntau yam kev xav ntawm lub cev. Cov enzyme uas hydrolyzes thiab tshem tawm cov davhlau ya nyob twg n-acetylneuraminidase (neuraminidase) yog dav dav hauv cov xwm txheej, los ntawm cov kab mob mus rau tsiaj. Los ntawm kev hloov pauv ntawm lub cev ntawm cov tshuaj enzyme no, lub luag haujlwm ntawm cov kua qaub qab zib nyob hauv lub davhlau ya nyob twg tau qhia meej. Piv txwv li, cov piam thaj seem no yog qhov sib txuas ntawm tus kab mob khaub thuas ntawm lub erythrocyte daim nyias nyias thiab ua lub luag haujlwm tseem ceeb hauv kev sib koom ua ke ntawm plasma glycoproteins thiab hepatocytes lossis kev paub txog cov txheej txheem ntawm lymphocytes ntawm txoj kev ncig. Txawm hais tias txoj kev biosynthetic sib txawv me ntsis ntawm cov tsiaj thiab cov kab mob, nws tag nrho dhau los ntawm N-acetylmannosamine los yog nws 6-phosphate, uas yog catalyzed los ntawm tshwj xeeb pyrophosphatase thiab reacts nrog CTP los tsim CMP-N-acetylneuraminic acid, uas yog incorporated rau hauv cov suab thaj. saw los ntawm glycosyl hloov cov tshuaj tiv thaiv.