N-Acetyl Cysteine Structure

N-Acetyl Cysteine

Chemical Properties

Melting point 106-108 °C(lit.)
alpha  -35.1 ºC (c=2,H2O)
Boiling point 407.7±40.0 °C(Predicted)
bulk density 730kg/m3
Density  1.249 (estimate)
vapor pressure  0Pa at 20℃
refractive index  24 ° (C=JPC Method)
storage temp.  2-8°C
solubility  H2O: 100 mg/mL with heating
pka pK1: 9.52 (30°C)
form  Solid
color  White
PH 1.5-2.5 (20°C, 100g/L in H2O)
biological source rabbit
Water Solubility  Soluble in water, ethanol, methanol, dimethyl sulfoxide, hot isopropyl alcohol, methyl acetate and ethyl acetate. Insoluble in chloroform and ether.
Merck  14,88
BRN  1724426
Specific Activity ≥20units/μg protein
Stability Stable. Incompatible with strong oxidizing agents.
Major Application cell analysis
Cosmetics Ingredients Functions ANTIOXIDANT
SKIN CONDITIONING
Cosmetic Ingredient Review (CIR) N-Acetyl-L-cysteine (616-91-1)
InChI 1S/C5H9NO3S/c1-3(7)6-4(2-10)5(8)9/h4,10H,2H2,1H3,(H,6,7)(H,8,9)/t4-/m0/s1
InChIKey PWKSKIMOESPYIA-BYPYZUCNSA-N
SMILES CC(=O)N[C@@H](CS)C(O)=O
LogP -0.6 at 23℃
CAS DataBase Reference 616-91-1(CAS DataBase Reference)
EWG's Food Scores 1
NCI Dictionary of Cancer Terms acetylcysteine; N-acetylcysteine; N-acetyl-L-cysteine
FDA UNII WYQ7N0BPYC
NCI Drug Dictionary acetylcysteine
ATC code R05CB01,S01XA08,V03AB23
NIST Chemistry Reference Acetylcysteine(616-91-1)
EPA Substance Registry System L-Cysteine, N-acetyl- (616-91-1)
UNSPSC Code 41116107
NACRES NA.41
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Safety

Symbol(GHS) Exclamation Mark (GHS07)
Signal wordWarning
Hazard statements H319
Precautionary statements P264-P280-P305+P351+P338-P337+P313
Risk Statements  36/37/38
Safety Statements  22-24/25
WGK Germany  3
RTECS  HA1660000
F  10-23
TSCA  TSCA listed
HS Code  29309016
Storage Class 13 - Non Combustible Solids
Hazard Classifications Eye Irrit. 2
Hazardous Substances Data 616-91-1(Hazardous Substances Data)
Toxicity LD50 orally in rats: 5050 mg/kg (Goldenthal)
NFPA 704:
0
1 0

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