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1.02838

L-Cysteine

Name: L-Cysteine
Brand: MM

for biochemistry

Sinónimos:

L-Cysteine, α-Amino-ß-mercapto propionic acid, αlpha-Amino-ß-mercapto propionic acid, Cys, αlpha-Amino-beta-mercapto propionic acid

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Fórmula empírica (notación de Hill):

C₃H₇NO₂S

Número CAS:

52-90-4

Peso molecular:

121.16

UNSPSC Code:

12352209

EC Index Number:

200-158-2

NACRES:

NA.21

MDL number:

MFCD00064306

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Propiedades

Quality Level

100

form

solid

autoignition temp.

420 °C

potency

1890 mg/kg LD₅₀, oral (Rat)

pH

4.5-5.5 (20 °C, 100 g/L in H₂O)

mp

220-228 °C

solubility

280 g/L

bulk density

300 kg/m³

storage temp.

2-30°C

SMILES string

SCC([N+H3])C(=O)[O-]

InChI

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

InChI key

XUJNEKJLAYXESH-UHFFFAOYSA-N

Descripción

Application

Exploring the molecular mechanisms of Lrp/AsnC-type transcription regulator DecR, an L-cysteine-responsive feast/famine regulatory protein.: This study delves into the role of DecR, an L-cysteine-responsive regulatory protein, in modulating bacterial response to nutrient availability, offering insights into microbial metabolism and potential targets for antibacterial strategies (Zhou et al., 2024).

Analysis Note

Assay (perchloric acid titration, calculated on dried substance): ≥ 99.0
Identity (IR-spectrum): passes test
Appearance: colorless to white, needle-shaped crystals
Appearance of solution (100 g/l, hydrochloric acid 2 mol/l): clear and colorless
Spec. rotation (α 20/D, 80 g/l, hydrochloric acid 1 mol/l, calc.on dried substance): +8.3 to +9.5
pH (25 g/l; CO₂-free water): 4.5 - 5.5
Chloride (Cl): ≤ 0.04 %
Sulfate (SO₄): ≤ 0.03 %
Heavy metals (as Pb): ≤ 0.001 %
As (Arsenic): ≤ 0.0001 %
Ca (Calcium): ≤ 0.001 %
Co (Cobalt): ≤ 0.0005 %
Fe (Iron): ≤ 0.0010 %
K (Potassium): ≤ 0.0005 %
Mg (Magnesium): ≤ 0.0005 %
Na (Sodium): ≤ 0.01 %
NH₄ (Ammonium): ≤ 0.02 %
Zn (Zinc): ≤ 0.0005 %
Foreign amino acids: ≤ 0.5 %
Other ninhydrine positive substances: ≤ 0.1 %
Loss on drying (105 °C; 3 h): ≤ 0.5 %

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Clase de almacenamiento

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c