L-cystéine, BioUltra ,>=98,5% (RT)

Name: L-cystéine, BioUltra ,>=98,5% (RT)
Brand: SIGMA-ALDRICH
SKU: 30089-25G
Price: 100.02 USD

Code: 30089-25G D2-231

Non disponible en dehors du Royaume-Uni et de l'Irlande

Application

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,...

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$100.02 25G

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Non disponible en dehors du Royaume-Uni et de l'Irlande

Application

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.

Biochem/physiol Actions

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.

NMDA glutamatergic receptor agonist.

λ	1 M in 1 M HCl
anion traces	sulfate (SO₄^2-): ≤50 mg/kg, chloride (Cl^-): ≤100 mg/kg
assay	≥98.5% (RT)
cation traces	Bi: ≤5 mg/kg, Mo: ≤5 mg/kg, Al: ≤5 mg/kg, K: ≤50 mg/kg, As: ≤0.1 mg/kg, Li: ≤5 mg/kg, Na: ≤100 mg/kg, Cr: ≤5 mg/kg, Mn: ≤5 mg/kg, Sr: ≤5 mg/kg, Mg: ≤5 mg/kg, Ca: ≤10 mg/kg, Pb: ≤5 mg/kg, Cu: ≤5 mg/kg, Ba: ≤5 mg/kg, Fe: ≤5 mg/kg, NH₄⁺: ≤500 mg/kg, Zn: ≤5 mg/kg, Ni: ≤5 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg
color	white
form	powder or crystals
ign. residue	≤0.05% (as SO₄)
impurities	≤0.5% foreign amino acids, insoluble matter, passes filter test
InChI key	XUJNEKJLAYXESH-REOHCLBHSA-N
InChI	1S/C3H7NO2S/c4-2(1-7)3(5)6/h2,7H,1,4H2,(H,5,6)/t2-/m0/s1
loss	≤0.05% loss on drying, 20 °C (HV)
mp	240 °C (dec.) (lit.)
optical activity	[α]20/D +8.0±0.5°, c = 5% in 5 M HCl
product line	BioUltra
Quality Level	200
SMILES string	N[C@@H](CS)C(O)=O
solubility	1 M HCl: 1 M at 20 °C, clear, colorless
technique(s)	HPLC: suitable
UV absorption	λ: 280 nm A_max: 0.2, λ: 260 nm A_max: 1.5

Safety Data Sheet for 30089-25G
Certificat d'analyse Sigma

Cas Number

52-90-4

Ce produit répond aux critères suivants pour être admissible aux récompenses suivantes :

L-cystéine, BioUltra ,>=98,5% (RT)

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