L-Serine Cas: 56-45-1 99-101% Dawb crystals lossis crystalline hmoov
Catalog Number | xwm 90289 |
Khoom npe | L-Serine |
CAS | 56-45-1 ib |
Molecular Formula | C3H7NO3 |
Molecular Luj | 105.09258 ib |
Cov ntaub ntawv khaws cia | Ambient |
Harmonized tariff Code | 29225 000 ib |
Khoom Specification
Assay | 99.0 - 101.0% |
Qhov tshwm sim | Dawb crystalline hmoov los yog crystalline hmoov |
Qib | USP Qib |
Arsenic | Max.1ppm ua |
pH | 5.2-6.2 |
Poob rau ziab | Max.0.20% |
Molecular Luj | 105 |
Chloride (Cl) | Max.0.020% |
Hlau | Max.10 ppm |
Residue ntawm Ignition | Max.0.10% |
Sulfate | Max.0.020% |
Kev sib hloov kho qhov muag tshwj xeeb | + 15.2 ° C |
Heavy Metals (Pb) | Max.10 ppm |
Ammonium | Max.0.02% |
Peptides uas muaj 8 rov ua dua ntawm aspartate-serine-serine (8DSS) tau pom los txhawb cov nucleation ntawm calcium phosphate los ntawm kev daws rau hauv tib neeg enamel.Ntawm no peb tau sim lub peev xwm ntawm 8DSS los txhawb cov remineralization ntawm demineralized enamel nyob rau hauv ib tug nyob rau hauv vitro qauv ntawm dag thaum ntxov enamel caries.Thawj kab mob caries tau tsim nyob rau hauv bovine enamel blocks, uas tau raug rau 12 d ntawm pH cycling nyob rau hauv lub xub ntiag ntawm 25 µM 8DSS, 1 g / L NaF (zoo tswj) los yog tsis nyob ib leeg (tsis zoo tswj).Kev nqus ntawm 8DSS tau txheeb xyuas los ntawm X-ray photoelectron spectroscopy.Mineral poob, qhov txhab qhov tob, thiab cov ntsiab lus ntxhia ntawm txheej txheej thiab ntawm qhov sib txawv ntawm qhov tob ntawm lub cev raug tshuaj xyuas ua ntej thiab tom qab pH cycling los ntawm polarized lub teeb microscopy thiab transverse microradiography.Mineral poob tom qab pH kev caij tsheb kauj vab tau qis dua hauv 8DSS cov qauv dua li hauv cov qauv tsis-tsuas yog, thiab cov kab mob hauv cov qauv 8DSS tau tob tob.Cov qauv kho nrog 8DSS tau pom cov ntsiab lus ntxhia ntau dua li cov qauv tsis-tsuas yog hauv thaj av uas txuas los ntawm txheej txheej saum npoo (30 µm) mus rau qhov nruab nrab qhov tob tob (110 µm).Tsis muaj qhov sib txawv tseem ceeb ntawm cov qauv kho nrog 8DSS thiab cov neeg kho nrog NaF.Cov kev tshawb pom no qhia tias 8DSS muaj lub peev xwm los txhawb kev rov tsim cov tshuaj demineralized enamel.