243005
L-Cysteine, Free Base
Naturally-occurring non-essential amino acid.
Synonym(s):
L-Cysteine, Free Base, Cys
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About This Item
Empirical Formula (Hill Notation):
C3H7NO2S
CAS Number:
Molecular Weight:
121.16
UNSPSC Code:
12352209
NACRES:
NA.54
MDL number:
eCl@ss:
32160406
description
Merck USA index - 14, 2781
Quality Segment
assay
≥98% (perchloric acid titration)
form
solid
optical activity
[α]20/D +8 to +9°, c = 5 in 1 M HCl
manufacturer/tradename
Calbiochem®
storage condition
OK to freeze
impurities
≤100 CFU/g Total microorganisms, ≤24 EU/g Endotoxin
color
white
solubility
water: 10 mg/mL, 1 M HCl: 50 mg/mL
cation traces
Fe: ≤10 ppm, heavy metals (as Pb): ≤0.001%
shipped in
ambient
storage temp.
15-25°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
General description
Naturally occurring non-essential amino acid.
Naturally-occurring non-essential amino acid.
Packaging
Packaged under inert gas
Preparation Note
Aqueous stock solutions are stable for up to 24 h at -20°C. Acidic stock solutions, when aliquoted and stored at -20°C, are stable for up to 1 month.
Legal Information
CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany
Disclaimer
Toxicity: Harmful (C)
Storage Class
11 - Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificates of Analysis (COA)
Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.
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