N-Acetyl-L-cysteine CAS#: 616-91-1; 凯望编码 (ChemWhat Code): 82555

IdentificationPhysical DataSpectra
Route of Synthesis (ROS)Safety and HazardsOther Data

Identification

英文名N-Acetyl-L-cysteine
IUPAC Name(2R)-2-acetamido-3-sulfanylpropanoic acid
分子结构Structure of N-Acetyl-L-Cysteine CAS 616-91-1
CAS编号 616-91-1
EINECS Number210-498-3
MDL NumberMFCD00004880
Beilstein Registry Number1724426
别名DL-N-Acetylcysteine;
2-(acetylamino)-3-sulfanylpropanoic acid
2-(Acetylamino)-3-sulfanylpropansäure [German]
7218-04-4 [RN]
Acetylcysteine [BAN] [INN] [USAN] [Wiki]
acide 2-(acétylamino)-3-sulfanylpropanoïque [French]
Cysteine, N-acetyl- [ACD/Index Name]
N-ACETYL-3-MERCAPTOALANINE
N-Acetylcystein [German] [ACD/IUPAC Name]
N-Acetylcysteine [ACD/IUPAC Name]
N-Acétylcystéine [French] [ACD/IUPAC Name]
分子式HSCH2CH(NHCOCH3)CO2H
分子量163.19
InChIInChI=1S/C5H9NO3S/c1-3(7)6-4(2-10)5(8)9/h4,10H,2H2,1H3,(H,6,7)(H,8,9)
InChI KeyPWKSKIMOESPYIA-UHFFFAOYSA-N
Canonical SMILESCC(=O)NC(CS)C(=O)O
Patent IDTitlePublication Date
US6759061Liver function improvement formulation2004
US2010/239552Combination Therapies for Treating Metabolic Disorders2010
WO2018/203194DIAZABICYCLOOCTANE DERIVATIVES COMPRISING A QUATERNERY AMMONIUM GROUP FOR USE AS ANTIBACTERIAL AGENTS2018

Physical Data

AppearanceWhite crystals or crystalline powder
SolubilityH2O: 100 mg/mL with heating
Flash PointNo data available
Refractive indexNo data available
SensitivityNo data available
Melting Point, °C Solvent (Melting Point)
106 – 108
93 – 104
127 – 129propan-2-ol
128.7 – 129.4ethanol
107 – 107.5propan-2-ol, diethyl ether
Partition Constant POWTemperature (Association (MCS)), °C
0.337

Spectra

Description (NMR Spectroscopy)Nucleus (NMR Spectroscopy)Solvents (NMR Spectroscopy)Frequency (NMR Spectroscopy), MHz
Spectrum1Hd(4)-methanol400
Spectrum1Hwater-d2500
Spectrum1Hdimethylsulfoxide-d6
NMR
Description (IR Spectroscopy)Comment (IR Spectroscopy)
Spectrum2500 – 1100 cm**(-1)
IR
Description (UV/VIS Spectroscopy)
Absorption maxima

Route of Synthesis (ROS)

Route of Synthesis (ROS) of N-Acetyl-L-cysteine CAS 616-91-1
Route of Synthesis (ROS) of N-Acetyl-L-cysteine CAS 616-91-1
ConditionsYield
With ammonia In methanol at 60℃; for 5h; Amberlite IRA400(CI);
Experimental Procedure
Cyanomethyl-carbamic acid tert-butyl ester (10 grains, 64.02 mmol) and 2- acetylamino-3-mercapto-propionic acid (10.45 grams, 64.02 mmol) were dissolved in 7N ammonia in methanol (140 ml) and heated at 60 0C in a sealed glass bomb for 5 hours. The reaction was cooled to ambient temperature, the solvent removed and the residue dissolved in water (250 ml). The aqueous layer was washed with ether and then loaded onto an ion exchange column (Amberlite IRA-400C1) charged with saturated ammonium chloride, eluting with water. The pure fractions were combined and lyophilized to yield Compound 18.1 (11.30 grams, 53.89 rnrnol, 84%). ES (+) MS m/e = 174 (M+l).
84%

Safety and Hazards

Pictogram(s)exclamation-mark
SignalWarning
GHS Hazard StatementsH315 (62.96%): Causes skin irritation [Warning Skin corrosion/irritation]
H319 (96.3%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
H335 (59.26%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
Information may vary between notifications depending on impurities, additives, and other factors.
Precautionary Statement CodesP261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, and P501
(The corresponding statement to each P-code can be found at the GHS Classification page.)

Other Data

TransportationNONH for all modes of transport
Under the room temperature and away from light
HS Code29309016
StorageUnder the room temperature and away from light
Shelf Life2 years
Market PriceUSD
Druglikeness
Lipinski rules component
分子量163.197
logP-0.133
HBA4
HBD2
Matching Lipinski Rules4
Veber rules component
Polar Surface Area (PSA)105.2
Rotatable Bond (RotB)4
Matching Veber Rules2
Use Pattern
N-Acetyl-L-cysteine CAS#: 616-91-1 is used as a sputum dissolving agent
N-Acetyl-L-cysteine CAS#: 616-91-1 an antidote for acetaminophen, arsenic and mercury poisoning.
N-Acetyl-L-cysteine CAS#: 616-91-1 can also protect the liver against the toxic effects of alcohol and reduce the toxic side effects of cancer drugs.

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