Przejdź do zawartości
Merck
Wszystkie zdjęcia(1)

Kluczowe dokumenty

Wyświetl całą dokumentację

30089

Sigma-Aldrich

L-Cysteine

≥98.5% (RT), suitable for HPLC, BioUltra

Synonim(y):

(R)-2-Amino-3-mercaptopropionic acid

Zaloguj sięWyświetlanie cen organizacyjnych i kontraktowych
Wszystkie zdjęcia(1)

About This Item

Wzór liniowy:
HSCH2CH(NH2)CO2H
Numer CAS:
52-90-4
Masa cząsteczkowa:
121.16
Beilstein:
1721408
Numer WE:
200-158-2
Numer MDL:
MFCD00064306
Kod UNSPSC:
12352209
eCl@ss:
32160406
Identyfikator substancji w PubChem:
57648406
NACRES:
NA.26
Informacje o cenach i dostępności nie są obecnie dostępne.

Nazwa produktu

L-Cysteine, BioUltra, ≥98.5% (RT)

linia produktu

BioUltra

Próba

≥98.5% (RT)

Formularz

powder or crystals

aktywność optyczna

[α]20/D +8.0±0.5°, c = 5% in 5 M HCl

metody

HPLC: suitable

zanieczyszczenia

insoluble matter, passes filter test
≤0.5% foreign amino acids

pozostałość po prażeniu

≤0.05% (as SO4)

strata

≤0.05% loss on drying, 20 °C (HV)

kolor

white

mp

240 °C (dec.) (lit.)

rozpuszczalność

1 M HCl: 1 M at 20 °C, clear, colorless

ślady anionów

chloride (Cl-): ≤100 mg/kg
sulfate (SO42-): ≤50 mg/kg

ślady kationów

Al: ≤5 mg/kg
As: ≤0.1 mg/kg
Ba: ≤5 mg/kg
Bi: ≤5 mg/kg
Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
K: ≤50 mg/kg
Li: ≤5 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Mo: ≤5 mg/kg
NH4+: ≤500 mg/kg
Na: ≤100 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Sr: ≤5 mg/kg
Zn: ≤5 mg/kg

λ

1 M in 1 M HCl

absorpcja UV

λ: 260 nm Amax: 1.5
λ: 280 nm Amax: 0.2

ciąg SMILES

N[C@@H](CS)C(O)=O

InChI

1S/C3H7NO2S/c4-2(1-7)3(5)6/h2,7H,1,4H2,(H,5,6)/t2-/m0/s1

Klucz InChI

XUJNEKJLAYXESH-REOHCLBHSA-N

Szukasz podobnych produktów? Odwiedź Przewodnik dotyczący porównywania produktów

Zastosowanie

L-Cysteine has been used in quenching of unreacted maleimide during antibody grafting. It has also been used in the preparation of nitrosocysteine stock solution, that has been employed to induce S-nitrosylation to achieve reversible cysteine modification.[1][2]

Działania biochem./fizjol.

Agonista receptora glutaminergicznego NMDA.
Cysteine is one of the functional amino acids that regulates metabolism for growth, reproduction, maintenance and immunity. Cysteine provides the disulfide linkage in proteins. It is directly associated with the transport of sulfur. Taurine, a metabolic product of cysteine acts as an antioxidant and controls the cellular redox state. Cysteine is involved in the formation of hydrogen sulfide that is utilized as a signaling molecule.[3]
Ta strona może zawierać tekst przetłumaczony maszynowo.

Kod klasy składowania

11 - Combustible Solids

Klasa zagrożenia wodnego (WGK)

WGK 1

Temperatura zapłonu (°F)

Not applicable

Temperatura zapłonu (°C)

Not applicable

Środki ochrony indywidualnej

dust mask type N95 (US), Eyeshields, Gloves

Wybierz jedną z najnowszych wersji:

Certyfikaty analizy (CoA)

Lot/Batch Number
BCCM5264
BCCM1560
BCCJ9613
BCCJ8887
BCCK9781

Nie widzisz odpowiedniej wersji?

Jeśli potrzebujesz konkretnej wersji, możesz wyszukać konkretny certyfikat według numeru partii lub serii.

Wyszukaj dokument COA

Masz już ten produkt?

Dokumenty związane z niedawno zakupionymi produktami zostały zamieszczone w Bibliotece dokumentów.

Odwiedź Bibliotekę dokumentów

Klienci oglądali również te produkty

Slide 1 of 5

1 of 5

L-Cystine ≥98% (TLC), crystalline

Sigma-Aldrich

C8755

L-Cystine

L-Cystine certified reference material, TraceCERT®, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland

Supelco

49603

L-Cystine

L-Cysteine hydrochloride monohydrate BioUltra, ≥99.0% (RT)

Sigma-Aldrich

30129

L-Cysteine hydrochloride monohydrate

L-Cysteine hydrochloride anhydrous, ≥99.0% (RT)

Sigma-Aldrich

30120

L-Cysteine hydrochloride

DL-Cysteine technical grade

Sigma-Aldrich

861677

DL-Cysteine

Preparation of polyion complex micelles from poly(ethylene glycol)-block-polyions
Nuria Bayo-Puxan
Journal of Controlled Release : Official Journal of the Controlled Release Society, 156(2), 118-127 (2011)
Resin-assisted enrichment of thiols as a general strategy for proteomic profiling of cysteine-based reversible modifications
Jia Guo
Nature Protocols, 9(1), 64-75 (2014)
Amino acids: metabolism, functions, and nutrition
Guoyao Wu
Amino Acids, 37(1), 1-17 (2009)
Takeshi Annoura et al.
FASEB journal : official publication of the Federation of American Societies for Experimental Biology, 28(5), 2158-2170 (2014-02-11)
The 10 Plasmodium 6-Cys proteins have critical roles throughout parasite development and are targets for antimalaria vaccination strategies. We analyzed the conserved 6-cysteine domain of this family and show that only the last 4 positionally conserved cysteine residues are diagnostic
Nicholas Kwiatkowski et al.
Nature, 511(7511), 616-620 (2014-07-22)
Tumour oncogenes include transcription factors that co-opt the general transcriptional machinery to sustain the oncogenic state, but direct pharmacological inhibition of transcription factors has so far proven difficult. However, the transcriptional machinery contains various enzymatic cofactors that can be targeted
Wyświetl wszystkie powiązane dokumenty

Produkty

Dietary Antioxidants

Antioxidants protect biological systems from oxidative damage produced by oxygen-containing free radicals and from redoxactive transition metal ions such as iron, copper, and cadmium.

Chromatograms

application for HPLC

Questions

1–2 of 2 Questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

      Helpful?

  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

      Helpful?

Reviews

No rating value

Active Filters

Nasz zespół naukowców ma doświadczenie we wszystkich obszarach badań, w tym w naukach przyrodniczych, materiałoznawstwie, syntezie chemicznej, chromatografii, analityce i wielu innych dziedzinach.

Skontaktuj się z zespołem ds. pomocy technicznej