L-Cystine CAS 56-89-3 (H-Cys-OH) 2 Assay 98.5~ 101.0% (Titration) Factory High Quality
Shanghai Ruifu Chemical Co., Ltd. est primarius fabrica et supplementum L-Cystine, (H-Cys-OH) 2, (CAS: 56-89-3) cum qualitate magna.Ut una ex maximis amino acida in Sinis, Ruifu opificiorum chemica amino acida qualificata et derivata usque ad signa internationalia, ut AJI, USP, EP, et FCC vexillum.Praebere possumus terrarum traditionem, parvas et parvas quantitates in promptu.Purchase L-Cystine, pete contactum:alvin@ruifuchem.com
| Nomen chemicum | L-Cystine |
| Synonyma | L-(-)-Cystine;(H-Cys-OH);Laevo-Cystine;(-)-Cystine;(-)-3,3'-Dithiobis(2-Aminopropanoicum Acidum);3,3'-Dithiobis-L-Alanine |
| Stock Status | In Stock, Productio Capacity 2000 Tons per Year |
| CAS Number | 56-89-3 |
| Formulae hypotheticae | C6H12N2O4S2 |
| M. Pondus | 240.29 |
| Liquescens punctum | >240℃(decl.) |
| Ferveret | 468.2±45.0℃ |
| Density | 1.68 |
| Solubilitas | Insolubilis in aqua, Ethanol et Ether.Acidi hydrochlorici diluti dissolvit |
| Solubilitas in HCl | Prope diaphanum |
| Repono Nativ. | Signatus in siccis, Store in Room Temperature |
| COA & MSDS | Praesto |
| Classification | Amino Acids et Derivatives |
| Brand | Ruifu Chemical |
| Periculum Codes | XI, Xn | RTECS | HA2690000 |
| Periculum Denunciationes | 36/37/38-22 | Aleam Nota | Irritant |
| Salus Denunciationes | 26-36-24/25 | TSCA | Ita |
| RIDADR | 2811 | Stipare Group | III |
| WGK Germania | 3 | HS Code* | 2930901000 |
| Items | Signa inspectionis | Proventus |
| Aspectus | Crystalla alba vel crystallina pulveris, insulsa | Conforms |
| Lepidium sativum | Infrared effusio Imaginis | Conforms |
| Imprimis rotationis [α]20/D | -218.0° ad -224.0°(C=2, 1N HCl) | -218.6° |
| Status Solutio (Transmittance) | Patet et hyalina ≥98.0% | 98.5% |
| Chloride (Cl) | ≤0.020% | <0.020% |
| Sulfate (SO4) | ≤0.020% | <0.020% |
| Aconitum (NH4) | ≤0.020% | <0.020% |
| Ferrum (Fe) | ≤10ppm | <10ppm |
| Metalla gravia (Pb) | ≤10ppm | <10ppm |
| Arsenicum (As2O3) | ≤1.0ppm | <1.0ppm |
| Alia Amino Acids | Chromatographice non detectable | Conforms |
| Damnum in Siccatio | ≤0.20% | 0.10% |
| Residere in Ignition | ≤0.10% | 0.04% |
| Assay | 98.5 ad 101.0% (Titratio: Anhydrous Basis) | 99.8% |
| PH Test | 5.0 ad 6.5 | 5.6 |
| Origin | Source non animal | Conforms |
| RELICTUM Solvents | Conforms | Conforms |
| conclusio | AJI92 cum vexillifero;USP37 | |
| Fasciae vita | XXIV Menses ex Manufacture Date si Repono Proprie | |
| Usus principalis | Amino acida;Cibus Additives;Pharmaceutical intermedia | |
sarcina: Fluorinated Utrem, 25kg/peram, 25kg/Cardboard Drum, vel secundum exigentiam emptoris.
Repono Condition:Copia in vasis obsignatis ad frigus, siccum et ventilatas horreis ab substantiis non repugnantibus.A luce et humore protege.
DEFINITIO
Cystine continet NLT 98.5% et NMT 101.5% C6H12N2O4S2, ut L-Cystine, in fundamento siccato computatum.
IDENTIFICATIO
A. INFRARED HAUSTUS <197K>
B. ROTATIO OPTICALIS, Rotatio Imprimis <781S>: -215 ad -225, ad 20° determinata.
Sample solutio: 20 mg/mL, in 1 N acido hydrochlorico
C. RF valor praecipuae maculae solutionis Sample in tium immunditiarum organicarum respondet solutioni Vexillifero.
TEMPTATIO
MODO PROCEDENDI
Sample solutio: Translatio cystinae circa 0,1 g ad lagenam vitream obtundam, et solve mixturam 2 mL sodii hydroxidi diluti (1 in 20) et aquae 10 mL.Adde solutionis bromidis potassae 10 mL (200 g/L in aqua), 50.0 mL 0.1 N potassae bromatis VS, et 15 mL acidi hydrochlorici diluti (17 in 100).
Protinus in lenticulam spissamentum inmitte, et in glaciem aquae lavacrum refrigerabis.Tutus a luce per 10 min sino stare.
Systema titrimetricum
(Vide Titrimetrium<541>)
Modus: Residua titration
Titrant: 0.1 N potassium bromate VS
Retro-titrant: 0.1 N sodium thiosulfate VS
Endpoint deprehensio: Colorimetric
Equivalentia: Quaelibet mL of 0.1 N potassae bromatis VS aequivalet cum 2.403 mg C6H12N2O4S2 in fundamento exsiccato.
Analysis: 1.5 g potassii iodidi adde, et post 1min, titrate cum 0.1 N sodium thiosulfate VS, amylo TS utendo ut indicator.Fac blank determinationes, et emendas quamlibet necessarias.
Acceptatio criteria: 98.5%~ 101.5% in fundamento exsiccato
IMPURITIES
Inorganic immunditias
RESIDUEON DE IGNIS <281>: NMT 0.1%
CHLORIDE ET SULFATE, CHLORIDE <221>: NMT 200 ppm.Pars 0.7-g non plus chloridi ostendit quam 0,40 mL 0.01 Acidi hydrochlorici N.
CHLORIDE ET SULFATE, Sulfate <221> NMT 200 ppm.Pars 1.2-g A 1.2-g non plus ostendit sulphate quam 0,25 mL 0,020 Acidi sulphurici N correspondens.
FERRUM <241>: NMT 10ppm
GRAVALIS METALS, Ratio I <231>: NMT 10ppm
Impurities organica
MODO PROCEDENDI
Solutio mensurae: Solve quantitatem USP Cystini RS in acido hydrochlorico 1 N, et aqua diluto ad solutionem obtinendam habens notam intentionem circiter 0.02 mg/mL.
Solutio Sample: Disolve quantitatem cystini in acido hydrochlorico 1 N, et aqua diluto ad solutionem obtinendam habens notam intentionem circiter 10 mg/mL.
Solutio idoneitatis systematis: Solve quantitates USP Cystini RS et USP arginini hydrochloridi RS in 1 N acido hydrochlorici, et aqua diluti ad solutionem obtinendam habentes notam concentratio uniuscuiusque circiter 0,4 mg/mL.
Systema chromatographicum (Vide Chromatographia <621>, chromatographia Thin-Layer.)
Modus: TLC
Adsorbent: 0.25-mm iacuit chromatographico silicae gel mixtionis
Applicationem voluminis: 5μL
Solvendo ratio explicandi: Mixtura ammoniaci et 2-propanoli (3:7).
Imbre reagens: Dissolve 0,2 g ninhydrin in 100 mL mixtionis butanol et 2 N acetici (95:5).
Analysis
Exempla: Solutio Standard, solutionis Sample et solutionis convenientiae ratio
Perge uti ad Chromatographiam <621>, Thin-Laer Chromatographiam.Post laminam aer exsiccans, imbre cum Spray gerente, et calor inter 100° et 105° pro 15 min.Discute laminam.Chromatogram ex solutione Systematis convenientia ostendit duas maculas distincte separatas.
Criteria acceptationis: Quaelibet macula secundaria de sample solutione non maior vel intensior est quam macula principalis solutionis Standardi.
Singulae immunditiae: NMT 0.2%
Totalis immunditiae: NMT 2.0%
IN SPECIE TESTS
LOSSON DE ARIFICATIONE <731>: Exemplum sicca in 105℃ pro 3 h: amittit NMT 0.2% sui ponderis.
ADDITICIUS REQUISITIS
PACKAGING AND STORAGE: Conserva in vasis bene clausis et repone ad temperatam gazam temperatam.
USP Reference STANDARDS <XI>
USP Arginine Hydrochloride RS
USP Cystine RS
Quam mercari?Quaeso contactumDr. Alvin Huang: sales@ruifuchem.com or alvin@ruifuchem.com
15 Annorum Usus?Plus quam XV annos experientiae habemus in fabricando et exportando amplis intermediis pharmaceuticis vel alchimicis pharmaceuticis amplis.
Mercatus principalis?Vendere mercatum domesticum, Americam septentrionalem, Europam, Indiam, Coream, Iaponicam, Australiam etc.
Commodi?Superior qualitas, parabilis pretium, officia professionalia et subsidia technica, ieiunium partus.
Qualitasfides?Qualitas strictioris temperantiae ratio.Pro instrumento analysi professionali includuntur NMR, LC-MS, GC, HPLC, ICP-MS, UV, IR, OR, KF, ROI, LOD, MP, Claritas, Solubilitas, Microbialis limes test, etc.
Exempla?Pleraque producta praebent exempla gratuita pro qualitate aestimationis, sumptus naviculas a clientibus solvendos.
Factory Audit?Factory audit gratissimum.Quaeso ante constitutum.
MOQ?Nec MOQ.Parvus ordo placet.
Tempus adferendi? Si intus prosapia, tres dies partus praestatur.
Transportatio?Per Express (FedEx, DHL), ab Air, per Mare.
Documenta?Post servitium venditionis: COA, MOA, ROS, MSDS, etc. praeberi possunt.
Consuetudo Synthesis?Consuetudo synthesis officia praebere potest ad optimas investigationes tuas necessitates aptandas.
Pensio conditio?Proforma cautionis primum post confirmationem ordinis mittetur, informationes nostrae ripae inclusas.Payment by T/T (Telex Transfer), PayPal, Western Union, etc.
L-Cystine, (H-Cys-OH) 2, (CAS: 56-89-3) est acidum sulphureum continens.1. L-Cysteine efficaciam detoxificationem habet.2. L-Cysteine efficaciter impedire et injuriam femper tractare potest.3. LCysteine ipsum melaninum cutis removere potest, naturam cutis ipsius immutat, cutis dealbatio naturalis fit.Est quoddam specimen naturale dealbatio uterentur.4. L-Cysteine salubria inflammationis et cutis allergia emendare potest.5. L-Cysteine morbus cutis cornea est etiam efficax hypertrophia.6. L-Cysteine munus habet ne biologicum senescit.7. Cysteine amino acidum quoddam naturale, multos usus in esculenta processus habet, maxime ad fructus coquendos adhibitus, sicut necessaria pars corrumpit melioris.8.Nam diam elit.Medium culturae biologicae para.Etiam in diam est, ac pellentesque elit.In medicina, potest oxidationem et reductionem functionis cellularum corporis promovere, cellulis sanguineis albis augere et impedire progressionem bacterii pathogenicae.Alopeciis variis maxime usus est.Adhibetur etiam pro morbis infectivis acutis, sicut dysenteria, typhoidea, influentia, asthma, neuralgia, scabie et variis morbis veneficiis, et partes agit in conservatione interdum configurationis.Usus est etiam in cibo saporis agentis.9. Biochemical reagens, adhibita ad culturam biologicam praeparandam media.Est etiam magna pars infusionis acidi amino et compositi praeparatio amino acidi.10. Ut nutrimentum nutritionis augens, adiuvat progressionem animalis, pondus corporis auget, iecoris et renis functionem et qualitatem furrure meliorem.11. Potest adhiberi ut medicamen elogium ad vulnus sanandum promovendum, ne allergia cutis et scabiem curent.
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