D-Histidine CAS 351-50-8 HD-His-OH Assay 98.5 ~ 101.0% Hoobkas
Shanghai Ruifu Chemical Co., Ltd. yog cov chaw tsim khoom ntawm D-Histidine (HD-His-OH) (CAS: 351-50-8) nrog cov khoom zoo.Ruifu Chemical muab ntau cov amino acids thiab derivatives.Peb tuaj yeem muab cov khoom xa tuaj thoob ntiaj teb, tus nqi sib tw, me me thiab ntau ntau muaj.Yuav D-Histidine,Please contact: alvin@ruifuchem.com
Tshuaj npe | D-Histidine |
Synonyms | HD-Nws-OH;D-Nws-OH;Dextro-Histidine;(R)-Histidine;(R)-2-Amino-3-(4-Imidazolyl)propionic Acid |
Tshuag xwm txheej | Hauv Tshuag, Muaj Peev Xwm Ntau Lawm 30 Tons ib Hlis |
CAS Nr | 351-50-8 : kuv |
Molecular Formula | C6H9N3O2 |
Molecular Luj | 155.16 g / mol |
Melting Point | 280.0 ~ 288.0 ℃ |
Qhov ntom | 1.423 ib |
Dej Solubility | Soluble hauv dej, 42 g / L (25 ℃) |
Solubility | 1 M HCl: Soluble (50 mg / ml) |
Cia Temp. | Qhov chaw txias & qhuav (2 ~ 8 ℃) |
COA & MSDS | Muaj |
Qeb | Amino Acids thiab Derivatives |
Hom | Ruifu Tshuaj |
Cov khoom | Kev soj ntsuam Standards | Cov txiaj ntsig |
Qhov tshwm sim | Dawb Crystalline hmoov | Ua raws |
Kev txheeb xyuas | Ua tau raws li qhov yuav tsum tau ua | Ua raws |
Kev sib hloov tshwj xeeb [α]20/D | +36.5 ° txog +40.5 ° C = 2, H2O | + 38.2 ° C |
Chloride (Cl) | ≤ 0.020% | <0.020% |
Sulfate (SO4) | ≤ 0.020% | <0.020% |
Ammonium (NH4) | ≤ 0.020% | <0.020% |
Heavy Metals (Pb) | ≤10ppm | <10ppm |
Hlau (Fe) | ≤10ppm | <10ppm |
Arsenic (As2O3) | ≤1ppm | <1 ppm |
Poob rau ziab | ≤ 0.20% | 0.15% |
Residue ntawm Ignition | ≤0.10% | 0.06% |
Lwm yam Amino Acids | ≤0.50% | <0.50% |
Assay | 98.5% ~ 101.0%. | 99.54% |
pH | 7.0-8.5 Nws | 7.6 |
Xaus | Cov khoom tau raug kuaj & ua raws li cov specifications |
Pob: Fluorinated Lub raj mis, Aluminium ntawv ci hnab, 25kg / Cardboard Nruas, lossis raws li cov neeg siv khoom xav tau.
Cia txias:Khaws rau hauv cov thawv ntim khoom ntawm qhov txias thiab qhuav (2 ~ 8 ℃) warehouse kom deb ntawm cov khoom tsis sib xws.Tiv thaiv los ntawm lub teeb thiab noo noo.
pH
noj 1.0g ntawm cov khoom no, ntxiv 50ml dej kom yaj, thiab ntsuas raws li txoj cai (Txoj cai 0631).Tus nqi pH yuav tsum yog 7.0 ~ 8.5.
Transmittance ntawm kev daws teeb meem
Noj 0.60g ntawm cov khoom no, ntxiv dej 20ml kom yaj, raws li UV-pom spectrophotometry (Txoj cai 0401), ntsuas qhov transmittance ntawm 430nm wavelength, tsis tsawg tshaj li 98.0%.
Chloride
Noj 0.25g ntawm cov khoom no thiab xyuas nws raws li txoj cai (Txoj cai 0801).Piv nrog rau kev tswj cov tshuaj ua los ntawm 0.02% ntawm tus qauv sodium chloride tov, nws yuav tsum tsis txhob muaj ntau concentrated ().
Sulfate
Noj 1.0g ntawm cov khoom no thiab xyuas nws raws li txoj cai (Txoj cai 0802).Piv nrog rau kev tswj kev daws teeb meem ua los ntawm 0.02% ntawm cov txheej txheem potassium sulfate tov, nws yuav tsum tsis txhob muaj ntau concentrated ().
Ammonium ntsev
noj 0.10g ntawm cov khoom no thiab xyuas nws raws li txoj cai (Txoj cai 0808).Piv nrog rau kev tswj cov tshuaj ua los ntawm 0.02% ntawm tus qauv ammonium chloride tov, nws yuav tsum tsis txhob tob ().
Lwm yam Amino Acids
noj qhov tsim nyog ntawm cov khoom no, ntxiv dej kom yaj thiab dilute los ua cov tshuaj uas muaj li ntawm 10 mg ib lml raws li kev tshuaj ntsuam xyuas;Siv 1ml rau kev ntsuas qhov tseeb thiab muab tso rau hauv 200ml ntsuas lub khob, dilute rau nplai nrog dej, co zoo, raws li kev tswj kev daws teeb meem;Siv tus nqi tsim nyog ntawm histidine siv thiab proline siv raws li, thiab muab tso rau hauv tib lub khob ntsuas, dej tau ntxiv rau yaj thiab diluted los npaj cov tshuaj uas muaj txog 0.4mg txhua ib 1ml raws li kev daws teeb meem.Raws li cov txheej txheem nyias nyias chromatography (General 0502), Kos 5 u1 ntawm txhua qhov saum toj no peb cov kev daws teeb meem, feem ntau taw tes rau tib silica gel G nyias txheej phaj, nrog N-propanol-concentrated ammonia tov (67:33) raws li cov tsim cov kuab tshuaj, nthuav dav, qhuav, tshuaj tsuag nrog ninhydrin hauv cov tshuaj acetone (1-50), cua sov ntawm 80 ° C kom txog thaum cov pob tshwm, thiab tshuaj xyuas tam sim ntawd.Kev tswj kev daws teeb meem yuav tsum pom qhov pom tseeb, thiab cov txheej txheem siv tau yuav tsum pom ob qhov sib cais tag nrho.Yog tias cov tshuaj ntsuam xyuas qhia pom qhov tsis huv, cov xim yuav tsum tsis txhob sib sib zog nqus (0.5%) tshaj qhov chaw tseem ceeb ntawm kev tswj cov tshuaj.
Poob rau ziab
noj cov khoom no, qhuav ntawm 105 ℃ rau 3 teev, poob ntawm qhov hnyav yuav tsum tsis pub tshaj 0.2% (Txoj cai 0831).
Residue ntawm Ignition
Tsis ntau tshaj 0.1% (Txoj cai 0841).
Hlau ntsev
noj 1.0g ntawm cov khoom no thiab xyuas nws raws li txoj cai (Txoj cai 0807).Piv nrog rau kev tswj kev daws teeb meem ua los ntawm 0.001% ntawm cov qauv hlau tov, nws yuav tsum tsis txhob sib sib zog nqus ().
Cov hlau hnyav
Cov khoom no 1.0g, tshuaj xyuas raws li txoj cai lij choj (Cov Ntsiab Cai 0821 Thawj Txoj Cai), uas muaj cov hlau hnyav yuav tsum tsis pub tshaj 10 feem ntawm ib lab.
Arsenic ntsev
noj 2.0g ntawm cov khoom no, ntxiv 23ml dej kom yaj, ntxiv 5ml ntawm hydrochloric acid, xyuas raws li txoj cai (Txoj cai 0822 thawj txoj cai), yuav tsum ua raws li cov kev cai (0.0001%).
Cov kab mob endotoxin
Noj cov khoom no, xyuas raws li txoj cai (Txoj cai 1143), txhua lg histidine uas muaj endotoxin yuav tsum tsawg dua 6.0EU.(rau txhaj tshuaj)
351-50-8 - Kev txiav txim siab txog cov ntsiab lus
Noj cov khoom no txog 0.15g, precision hnyav, ntxiv anhydrous formic acid 2ml kom yaj, ntxiv glacial acetic acid 50ml, raws li txoj cai muaj peev xwm titration (Txoj cai 0701), nrog perchloric acid titration tov (0.1 mol / L) titration, thiab cov txiaj ntsig ntawm titration tau raug kho nrog kev kuaj dawb.Txhua 1 ml perchloric acid titration tov (0.1 mol / L) sib raug rau 15.52mg ntawm C6H9N302.
Yuav Yuav Li Cas?Thov hu rauDr. Alvin Huang: sales@ruifuchem.com or alvin@ruifuchem.com
15 Xyoo Kev Paub?Peb muaj ntau tshaj li 15 xyoo ntawm kev paub nyob rau hauv kev tsim thiab export ntawm ib tug ntau yam ntawm zoo tshuaj intermediates los yog zoo tshuaj.
Kev lag luam loj?Muag rau kev lag luam hauv tsev, North America, Europe, India, Kauslim, Nyiv, Australia, thiab lwm yam.
Qhov zoo?Superior zoo, tus nqi pheej yig, kev pabcuam tshaj lij thiab kev txhawb nqa kev pabcuam, xa khoom sai.
ZooKev lees paub?Kev tswj xyuas nruj nruj.Cov cuab yeej tshaj lij rau kev txheeb xyuas suav nrog NMR, LC-MS, GC, HPLC, ICP-MS, UV, IR, OR, KF, ROI, LOD, MP, Clarity, Solubility, Microbial limit test, thiab lwm yam.
Cov qauv?Cov khoom lag luam feem ntau muab cov qauv dawb rau kev soj ntsuam zoo, tus nqi thauj khoom yuav tsum tau them los ntawm cov neeg siv khoom.
Factory Audit?Lub Hoobkas tshawb xyuas txais tos.Thov teem caij ua ntej.
MOQ?Tsis muaj MOQ.Kev txiav txim me me tau txais.
Lub sij hawm xa tuaj? Yog hais tias nyob rau hauv Tshuag, peb hnub shipping guaranteed.
Kev thauj mus los?Los ntawm Express (FedEx, DHL), los ntawm Cua, los ntawm hiav txwv.
Cov ntaub ntawv?Kev pab cuam tom qab muag: COA, MOA, ROS, MSDS, thiab lwm yam tuaj yeem muab tau.
Kev cai Synthesis?tuaj yeem muab cov kev pabcuam sib xyaw ua ke kom haum rau koj cov kev xav tau tshawb fawb.
Cov nqe lus them nqi?Proforma invoice yuav raug xa ua ntej tom qab kev pom zoo ntawm kev txiav txim, kaw peb cov ntaub ntawv hauv tuam txhab nyiaj.Kev Them Nyiaj los ntawm T / T (Telex Transfer), PayPal, Western Union, thiab lwm yam.
Hazard Symbols Xn - Ua phem
Safety Description S22 - Tsis txhob ua pa plua plav.
S24/25 - Tsis txhob sib cuag nrog daim tawv nqaij thiab qhov muag.
S36/37 - Hnav cov khaub ncaws tiv thaiv thiab hnab looj tes tsim nyog.
S26 - Nyob rau hauv rooj plaub ntawm qhov muag, yaug tam sim ntawd nrog dej txaus thiab nrhiav kev kho mob.
WGK Germany 3
TSCA Yes
HS Code 2922491990
D-Histidine (HD-His-OH) (CAS: 351-50-8) yog qhov tsis zoo, tsis muaj roj ntsha isomer ntawm L-Histidine.D-Histidine paub tias inhibit cell division, thiab kuj tseem siv los ntawm qee hom kab mob (xws li Escherichia coli) ua ib qho ntawm L-Histidine.Ib daim ntawv ua haujlwm optically ntawm histidine muaj D-configuration.
Amino acids thiab derivatives, siv nyob rau hauv peptide synthesis, siv raws li ib tug organic synthesis intermediate, tshuaj intermediate, yuav siv tau raws li ib tug chiral intermediate, biochemical reagent los yog tshuaj reagent.
D-Histidine tuaj yeem siv rau hauv kev tsim cov tshuaj peptide, cationic peptides, xws li analogues ntawm carnosine.D-Histidine kuj tseem siv tau los ua tus neeg sawv cev hnyav hlau.