DL-Cysteine CAS 3374-22-9 Kev Ntsuas 98.0 ~ 102.0%
Shanghai Ruifu Chemical Co., Ltd. yog cov chaw tsim khoom thiab cov chaw muag khoom ntawm DL-Cysteine (H-DL-Cys-OH) (CAS: 3374-22-9) nrog cov khoom zoo, muaj peev xwm ntau lawm 500 Tons ib xyoos twg.Ruifu Chemical muab ntau cov amino acids thiab derivatives.Peb tuaj yeem muab COA, xa khoom thoob ntiaj teb, me me thiab ntau ntau.Yog tias koj txaus siab rau DL-Cysteine,Please contact: alvin@ruifuchem.com
| Tshuaj npe | DL-Cysteine muaj nuj nqi |
| Synonyms | H-DL-Cys-OH;DL-Cys;cysteine;(+/-)-cysteine;(±)-2-Amino-3-Mercaptopropionic Acid;DL-2-Amino-3-Mercaptopropanoic Acid;DL-2-Amino-3-Mercaptopropionic Acid;(R,S)-2-Amino-3-Mercaptopropionic Acid |
| Tshuag xwm txheej | Hauv Tshuag, Muaj Peev Xwm Ntau Lawm 500 Tons ib xyoos |
| CAS Nr | 3374-22-9 |
| Molecular Formula | C3H7NO2S |
| Molecular Luj | 121.16 Nws |
| Melting Point | 225 ℃ (dej.) (lit.) |
| Boiling Point | 293.9 ± 35.0 ℃ |
| rhiab heev | Lub teeb rhiab heev;Moisture Sensitive;Huab cua Sensitive |
| Solubility | Soluble hauv dej (ib feem), 1 N HCl (25 mg / ml), Ethanol, thiab acetic acid.Insoluble hauv Acetone |
| Kev ruaj ntseg | ruaj khov.Incompatible Nrog Muaj Zog Oxidizing Agents |
| Cia Temp. | Muab ntim rau hauv Qhuav, Khaws ntawm Chav Kub |
| COA & MSDS | Muaj |
| Kev faib tawm | Amino Acids thiab Derivatives |
| Hom | Ruifu Tshuaj |
| Cov khoom | Kev soj ntsuam Standards | Cov txiaj ntsig |
| Qhov tshwm sim | Dawb Crystals los yog Crystalline Hmoov | Ua raws |
| Kev txheeb xyuas | Infrared Absorption Spectrum yog tsim | Ua raws |
| Kev sib hloov tshwj xeeb [α]20/D | -1.0 ° txog +1.0 ° (C = 8, 1 N HCl) | 0 ° |
| State of Solution (Kev xa tawm) | Ntshiab thiab tsis muaj xim ≥95.0% | 96.1% |
| Chloride (Cl) | ≤0.100% | <0.100% |
| Hlau (Fe) | ≤ 5ppm | <5 ppm |
| Heavy Metals (Pb) | ≤10ppm | <10ppm |
| Arsenic (As2O3) | ≤ 1.0ppm | <1.0ppm |
| Lwm yam Amino Acids | ≤ 2.00% | Ua raws |
| Poob rau ziab | ≤ 0.20% | 0.12% |
| Residue ntawm Ignition (Sulfated) | ≤0.10% | 0.05% |
| Assay | 98.0 ~ 102.0% | 99.9% |
| Xaus | Cov khoom no los ntawm Kev Tshawb Fawb Pom Zoo nrog Tus Qauv ntawm AJI97 | |
| Kev siv tseem ceeb | Amino Acids;Khoom noj khoom haus additives;Pharmaceutical Intermediates | |
DL-Cysteine (CAS: 3374-22-9) AJI 97 Test Method
Kev txheeb xyuas: Sib piv cov infrared absorption spectrum ntawm cov qauv nrog cov qauv ntawm cov txheej txheem potassium bromide disc.
State of Solution (Transmittance): 0.5g hauv 50ml ntawm H2O, spectrophotometer, 430nm, 10mm cell thickness.
Chloride (Cl): 0.14g, A-5, ref: 0.40ml ntawm 0.01mol / L HCl
Hlau (Fe): 0.6g, ref: 0.3ml ntawm Hlau Std.(0.01 mg/ml)
Heavy Metals (Pb): 2.0g, (1), ref: 2.0ml ntawm Pb Std.(0.01 mg/ml)
Arsenic (As2O3): 2.0g, (1), ref: 2.0ml ntawm As2O3 Std.
Lwm cov Amino Acids: Cov Qauv Xeem: 10μg, A-2-a, tswj;L-Cystine 0.2 μg
Poob ntawm Kev Qhuav: Hauv lub tshuab nqus tsev, ntawm chav sov li 3 teev.
Residue ntawm Ignition (Sulfated): AJI Test 13
Assay: Cov qauv qhuav, 250mg, 0.05mol / L I2 1ml = 12.116mg C3H7NO2S
Lwm yam Amino Acids:
Dissolve 200mg ntawm cov qauv hauv 2% N-ethyl-maleimide aqueous tov kom 100ml ntawm cov tshuaj ntsuam xyuas.Dissolve 40mg ntawm L-Cystine hauv me me ntawm 2mol / L HCl thiab ntxiv dej los ua 100ml tov.
Dilute 10ml ntawm cov tshuaj kom raug nyob rau hauv dej kom 100ml ntawm standard tov.Cia sawv ntsug li 30 feeb thiab tom qab ntawd ua raws li tau hais tseg rau cov txheej txheem raws li AJI TEST 9.
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.
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.
3374-22-9 - Kev pheej hmoo thiab kev nyab xeeb
Hazard Codes Xn,Xi,C
Risk Codes
R20/21/22 - Ua phem los ntawm kev nqus pa, tiv tauj nrog daim tawv nqaij thiab yog tias nqos.
R36/37/38 - Kab mob rau qhov muag, ua pa thiab tawv nqaij.
R22 - Ua phem yog tias nqos
R35 - Ua rau kub hnyiab heev
Kev nyab xeeb piav qhia
S26 - Nyob rau hauv rooj plaub ntawm qhov muag, yaug tam sim ntawd nrog dej txaus thiab nrhiav kev kho mob.
S36 - Hnav khaub ncaws tiv thaiv zoo.
S37/39 - Hnav cov hnab looj tes tsim nyog thiab tiv thaiv qhov muag / ntsej muag
S45 - Thaum muaj xwm txheej lossis yog tias koj tsis xis nyob, nrhiav kev kho mob tam sim ntawd (qhia daim ntawv lo thaum twg los tau.)
S36/37/39 - Hnav cov khaub ncaws tiv thaiv, hnab looj tes thiab tiv thaiv qhov muag / ntsej muag.
UN IDs UN 2923 6.1(8) / PGIII
WGK Germany 3
RTECS HA1595000
FLUKA BRAND F CODE 8-10-23
HS Code 29309013
DL-Cysteine (H-DL-Cys-OH) (CAS: 3374-22-9), sulfur-muaj amino acid uas yog propanoic acid nrog ib pawg amino ntawm txoj hauj lwm 2 thiab ib pawg sulfanyl ntawm txoj hauj lwm 3. DL-Cysteine yog covalently txuas dimeric tsis tseem ceeb amino acid tsim los ntawm oxidation ntawm CYSTEINE.Ob lub molecules ntawm cysteine yog koom ua ke los ntawm tus choj disulfide los tsim cystine.Cystine yog ib qho tsis tseem ceeb amino acid uas ua raws li kev noj haus thiab kev noj haus ntxiv.Nws yog me ntsis soluble hauv dej thiab hauv cawv.nws txhim kho kev lom neeg zoo ntawm tag nrho cov protein nyob rau hauv cov khoom noj uas muaj ib txwm tshwm sim tsis muaj protein ntau.
DL-Cysteine yog ib qho tsis tseem ceeb amino acid uas tuaj yeem tsim los ntawm tib neeg lub cev raws li lub cev muaj zog yog tias muaj cov methionine txaus.Cysteine feem ntau yog siv los ua tus thawj coj hauv kev lag luam khoom noj thiab tshuaj.Cysteine yog siv los ua kev pabcuam rau kev ci, ua ib qho ntxiv hauv cov luam yeeb, nrog rau kev npaj cov nqaij.
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