L-Cysteine, BioUltra, >=98.5% (RT)

Code: 30089-100G D2-231

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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€272.00 100G
€334.56 inc. VAT
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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.

λ1 M in 1 M HCl
anion tracessulfate (SO42-): ≤50 mg/kg, chloride (Cl-): ≤100 mg/kg
assay≥98.5% (RT)
cation tracesBi: ≤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
colorwhite
formpowder or crystals
ign. residue≤0.05% (as SO4)
impurities≤0.5% foreign amino acids, insoluble matter, passes filter test
InChI keyXUJNEKJLAYXESH-REOHCLBHSA-N
InChI1S/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)
mp240 °C (dec.) (lit.)
optical activity[α]20/D +8.0±0.5°, c = 5% in 5 M HCl
product lineBioUltra
Quality Level200
SMILES stringN[C@@H](CS)C(O)=O
solubility1 M HCl: 1 M at 20 °C, clear, colorless
technique(s)HPLC: suitable
UV absorptionλ: 280 nm Amax: 0.2, λ: 260 nm Amax: 1.5
Cas Number52-90-4
This product has met the following criteria to qualify for the following awards:



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