L-Cystine CAS 56-89-3 (H-Cys-OH) 2 Kev Ntsuam Xyuas 98.5 ~ 101.0% (Titration) Hoobkas Zoo
Shanghai Ruifu Chemical Co., Ltd. yog cov chaw tsim khoom thiab cov chaw muag khoom ntawm L-Cystine, (H-Cys-OH) 2, (CAS: 56-89-3) nrog cov khoom zoo.Raws li ib tug ntawm cov loj tshaj plaws amino acids lwm tus neeg nyob rau hauv Tuam Tshoj, Ruifu Chemical manufactures tsim nyog amino acids thiab derivatives mus rau thoob ntiaj teb cov qauv, xws li AJI, USP, EP, thiab FCC txuj.Peb tuaj yeem muab kev xa khoom thoob ntiaj teb, me me thiab ntau qhov ntau.Yuav L-Cystine, Thov hu rau:alvin@ruifuchem.com
| Tshuaj npe | L-Cystine |
| Synonyms | L-(-)-Cystine;(H-Cys-OH) 2;Laevo-Cystine;(-)-Cystine;(-)-3,3'- Dithiobis (2-Aminopropanoic Acid);3,3'-Dithiobis-L-Alanine |
| Tshuag xwm txheej | Hauv Tshuag, Muaj Peev Xwm Ntau Lawm 2000 Tons ib xyoos |
| CAS Nr | 56-89-3 : kuv |
| Molecular Formula | C6H12N2O4S2 |
| Molecular Luj | 240.29 Nws |
| Melting Point | ≥ 240 ℃ (dej.) (lit.) |
| Boiling Point | 468.2 ± 45.0 ℃ |
| Qhov ntom | 1.68 ib |
| Solubility | Insoluble hauv dej, Ethanol thiab Ether.Dissolves hauv Dilute Hydrochloric Acid |
| Solubility hauv HCl | Yuav luag Transparency |
| Cia Temp. | Muab ntim rau hauv Qhuav, Khaws ntawm Chav Kub |
| COA & MSDS | Muaj |
| Kev faib tawm | Amino Acids thiab Derivatives |
| Hom | Ruifu Tshuaj |
| Hazard Codes | Xi, Xn | RTECS | TIAB SA 269000 |
| Risk Statements | 36/37/38-22 ib | Kev Ceeb Toom | Irritant |
| Cov lus hais txog kev nyab xeeb | 26-36-24/25 ib | TSCA | Yog lawm |
| RIDADR | 2811 ib | Packing Group | III |
| WGK Germany | 3 | HS Code | 2930901000 ib |
| Cov khoom | Kev soj ntsuam Standards | Cov txiaj ntsig |
| Qhov tshwm sim | Dawb Crystals los yog Crystalline Hmoov, Tasteless | Ua raws |
| Kev txheeb xyuas | Infrared Absorption Spectrum yog tsim | Ua raws |
| Kev sib hloov tshwj xeeb [α]20/D | -218.0 ° rau -224.0 ° (C = 2, 1N HCl) | -218.6 ° |
| State of Solution (Kev xa tawm) | Ntshiab thiab tsis muaj xim ≥98.0% | 98.5% |
| Chloride (Cl) | ≤ 0.020% | <0.020% |
| Sulfate (SO4) | ≤ 0.020% | <0.020% |
| Ammonium (NH4) | ≤ 0.020% | <0.020% |
| Hlau (Fe) | ≤10ppm | <10ppm |
| Heavy Metals (Pb) | ≤10ppm | <10ppm |
| Arsenic (As2O3) | ≤ 1.0ppm | <1.0ppm |
| Lwm yam Amino Acids | Chromatographically Tsis Detectable | Ua raws |
| Poob rau ziab | ≤ 0.20% | 0.10% |
| Residue ntawm Ignition | ≤0.10% | 0.04% |
| Assay | 98.5 txog 101.0% (Titration: Anhydrous Basis) | 99.8% |
| pH Test | 5.0 rau 6.5 | 5.6 |
| Keeb kwm | Tsis yog Tsiaj Source | Ua raws |
| Residual Solvents | Ua raws | Ua raws |
| Xaus | Ua raws li tus qauv ntawm AJI92;USP37 | |
| Txee lub neej | 24 lub hlis txij hnub tsim khoom yog tias khaws cia kom raug | |
| Kev siv tseem ceeb | Amino Acids;Khoom noj khoom haus additives;Pharmaceutical Intermediates | |
Pob: Fluorinated Fwj, 25kg / hnab, 25kg / Cardboard Nruas, los yog raws li tus neeg yuav tsum tau muaj.
Cia txias:Khaws rau hauv cov thawv ntim khoom ntawm qhov chaw txias, qhuav thiab cua tshuab kom deb ntawm cov khoom tsis sib xws.Tiv thaiv los ntawm lub teeb thiab noo noo.
DEFINITION
Cystine muaj NLT 98.5% thiab NMT 101.5% ntawm C6H12N2O4S2, raws li L-Cystine, xam rau ntawm lub hauv paus qhuav.
IDENTIFICATION
A. INFRARED ABSORPTION <197K>
B. OPTICAL ROTATION, Kev sib hloov tshwj xeeb <781S>: -215 txog -225, txiav txim siab ntawm 20 °
Cov qauv tshuaj: 20 mg / mL, hauv 1 N hydrochloric acid
C. Tus nqi RF ntawm qhov chaw tseem ceeb ntawm cov qauv kev daws teeb meem hauv qhov kev sim rau Organic Impurities sib raug rau qhov kev daws teeb meem.
QHIA
txheej txheem
Piv txwv li: Hloov 0.1 g ntawm Cystine mus rau ib khob-stoppered hwj, thiab yaj nyob rau hauv ib tug sib tov ntawm 2 mL ntawm dilute sodium hydroxide (1 nyob rau hauv 20) thiab 10 mL dej.Ntxiv 10 mL ntawm poov tshuaj bromide tov (200 g / L hauv dej), 50.0 mL ntawm 0.1 N poov tshuaj bromate VS, thiab 15 mL ntawm dilute hydrochloric acid (17 hauv 100).
Tam sim ntawd ntxig lub stopper rau hauv lub khob, thiab txias hauv ib da dej dej khov.Cia sawv ntsug tiv thaiv lub teeb rau 10 feeb.
Titrimetric system
(Saib Titrimetry <541>)
Hom: Residual titration
Titrant: 0.1 N poov tshuaj bromate VS
Rov qab-titrant: 0.1N sodium thiosulfate VS
Kev kuaj pom qhov kawg: Colorimetric
Sib npaug: Txhua mL ntawm 0.1 N potassium bromate VS yog sib npaug rau 2.403 mg ntawm C6H12N2O4S2 ntawm lub hauv paus qhuav.
Kev tsom xam: Ntxiv 1.5 g ntawm poov tshuaj iodide, thiab tom qab 1min, titrate nrog 0.1 N sodium thiosulfate VS, siv cov hmoov txhuv nplej siab TS ua qhov taw qhia.Ua ib qho kev txiav txim siab dawb paug, thiab ua ib qho kev kho uas tsim nyog.
Kev lees txais: 98.5% ~ 101.5% ntawm lub hauv paus qhuav
IMPURITIES
Inorganic impurities
RESIDUEON ON IGNITION <281>: NMT 0.1%
CHLORIDE THIAB SULFATE, Chloride <221>: NMT 200 ppm.Ib feem ntawm 0.7-g qhia tias tsis muaj chloride ntau dua li 0.40 mL ntawm 0.01 N hydrochloric acid.
CHLORIDE THIAB SULFATE, Sulfate <221> NMT 200 ppm.Ib feem 1.2-g qhia tias tsis muaj sulfate ntau dua li 0.25 mL ntawm 0.020 N sulfuric acid.
Hlau <241>: NMT 10ppm
HEAVY METALS, Method I <231>: NMT 10ppm
Organic impurities
txheej txheem
Cov txheej txheem kev daws teeb meem: Dissolve ib tug ntau ntawm USP Cystine RS nyob rau hauv 1 N hydrochloric acid, thiab dilute nrog dej kom tau txais ib tug paub txog concentration ntawm txog 0.02 mg / mL.
Piv txwv li: Dissolve ib tug ntau ntawm Cystine nyob rau hauv 1 N hydrochloric acid, thiab dilute nrog dej kom tau ib tug paub txog concentration ntawm txog 10 mg / mL.
Cov kev daws teeb meem tsim nyog: Dissolve ntau ntawm USP Cystine RS thiab USP Arginine Hydrochloride RS hauv 1 N hydrochloric acid, thiab dilute nrog dej kom tau txais cov tshuaj uas muaj kev paub txog ntawm 0.4 mg / mL txhua.
Chromatographic system (Saib Chromatography <621>, Thin-Layer Chromatography.)
Mode: TLC
Adsorbent: 0.25-mm txheej ntawm chromatographic silica gel sib tov
Daim ntawv ntim: 5μL
Kev tsim cov kuab tshuaj: Kev sib xyaw ntawm ammonia thiab 2-propanol (3: 7)
Txau reagent: Dissolve 0.2 g ntawm ninhydrin hauv 100 mL ntawm kev sib xyaw ntawm butanol thiab 2 N acetic acid (95: 5).
Kev tsom xam
Cov Qauv: Cov qauv kev daws teeb meem, Cov qauv kev daws teeb meem, thiab kev daws teeb meem tsim nyog
Ua raws li qhia rau Chromatography <621>, Thin-Layer Chromatography.Tom qab cua qhuav lub phaj, tshuaj tsuag nrog tshuaj tsuag reagent, thiab cua sov ntawm 100 ° thiab 105 ° rau 15 min.Tshawb xyuas lub phaj.Lub chromatogram los ntawm qhov kev daws teeb meem tsim nyog tau nthuav tawm ob qhov sib cais kom meej.
Kev lees txais cov qauv: Txhua qhov chaw thib ob los ntawm cov qauv kev daws teeb meem tsis loj dua lossis hnyav dua li qhov chaw tseem ceeb ntawm Cov Txheej Txheem.
Tus kheej impurities: NMT 0.2%
Tag nrho impurities: NMT 2.0%
TSEEM CEEB
LOSSON RAU DRYING <731>: Qhuav ib qho qauv ntawm 105 ℃ rau 3 h: nws poob NMT 0.2% ntawm nws qhov hnyav.
TSEEM CEEB
PACKAGING THIAB STORAGE: Khaws rau hauv cov thawv kaw kom zoo, thiab khaws cia ntawm chav tsev kub tswj.
USP REFERENCE STANDARDS <11>
USP Arginine Hydrochloride RS
USP Cystine RS
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.
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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.
L-Cystine, (H-Cys-OH) 2, (CAS: 56-89-3) yog sulfur-muaj amino acid.1. L-Cysteine muaj cov tshuaj tua kab mob zoo.2. L-Cysteine tuaj yeem tiv thaiv thiab kho kev raug mob hluav taws xob zoo.3. LCysteine tuaj yeem tshem tawm cov tawv nqaij melanin nws tus kheej, hloov qhov xwm txheej ntawm daim tawv nqaij nws tus kheej, daim tawv nqaij ua kom dawb huv.Nws yog ib hom zoo tagnrho natural whitening tshuaj pleev ib ce.4. L-Cysteine tuaj yeem txhim kho cov tsos mob ntawm o thiab ua xua ntawm daim tawv nqaij.5. L-Cysteine ntawm cov kab mob horny ntawm daim tawv nqaij kuj ua tau zoo hypertrophy.6. L-Cysteine muaj nuj nqi los tiv thaiv kev laus.7. Cysteine yog ib yam ntawm ntuj amino acid, muaj ntau yam siv nyob rau hauv kev ua zaub mov, nws yog tsuas yog siv rau ci khoom, raws li ib tug tsim nyog cov khoom ntawm mov paj txhim kho.8.Rau kev tshawb fawb biochemical.Npaj cov kab lis kev cai lom neeg.Nws yog siv nyob rau hauv biochemistry thiab kev tshawb fawb khoom noj khoom haus.Hauv cov tshuaj, nws tuaj yeem txhawb nqa oxidation thiab txo kev ua haujlwm ntawm lub cev hlwb, nce cov qe ntshav dawb thiab tiv thaiv kev loj hlob ntawm cov kab mob pathogenic.Nws yog tsuas yog siv rau ntau yam alopecia.Nws kuj tseem siv rau cov kab mob sib kis xws li mob plab, mob plab, mob khaub thuas, mob khaub thuas, mob hawb pob, neuralgia, eczema thiab ntau yam kab mob lom, thiab ua lub luag haujlwm hauv kev tswj cov protein ntau.Nws kuj yog siv los ua zaub mov flavoring agent.9. Biochemical reagent, siv rau kev npaj tshuaj lom neeg kab lis kev cai nruab nrab.Nws tseem yog ib qho tseem ceeb ntawm cov amino acid infusion thiab compound amino acid npaj.10. Raws li kev noj zaub mov zoo, nws yog qhov tsim nyog rau kev loj hlob ntawm cov tsiaj, ua kom lub cev hnyav, lub siab thiab lub raum ua haujlwm thiab txhim kho cov plaub hau zoo.11. Nws tuaj yeem siv los ua cov tshuaj pleev ib ce los txhawb kev kho qhov txhab, tiv thaiv daim tawv nqaij ua xua thiab kho eczema.
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