Cas no 616-91-1 (Acetylcysteine)

Acetylcysteine is a thiol-containing compound used as an antidote for acetaminophen overdose and mucolytic agent to break down mucus. It exhibits antioxidant properties, reducing oxidative stress and stabilizing disulfide bonds in proteins. Its efficacy lies in its ability to replenish glutathione levels and facilitate the detoxification of toxic substances.
Acetylcysteine structure
Acetylcysteine structure
Product Name:Acetylcysteine
CAS No:616-91-1
MF:C5H9NO3S
MW:163.194860219955
MDL:MFCD00004880
CID:38976
PubChem ID:24277970
Update Time:2025-08-06

Acetylcysteine Chemical and Physical Properties

Names and Identifiers

    • N-Acetylcysteine
    • (S)-ALPHA-AMINO-2-NAPHTHALENEPROPIONIC ACID
    • RARECHEM BK PT 0097
    • N-ACETYL-3-MERCAPTOALANINE
    • N-ACETYL-L-(+)-CYSTEINE
    • N-ACETYL-L-CYSTEINE
    • N-ALPHA-ACETYL-L-CYSTEINE
    • 3-(2-NAPHTHYL)-ALANINE
    • (R)-2-Acetamido-3-mercaptopropanoic acid
    • Ac-Cys-OH
    • N-Acetyl-cysteine
    • (2R)-2-acetylamino-2-carboxyethanethiol
    • AC-ASP-GLU
    • AC-ASP-GLU H2O
    • AC-ASP-GLU-OH
    • Acetylcysteine
    • ACETYL-D-E
    • Acetyl-L-cysteine
    • Isospaglumic acid
    • LNAC
    • L-N-acetyl-cysteine
    • L-α-AcetaMido-β-Mercaptopropionic acid
    • NAAG
    • NAAGA
    • Naaxia
    • NAC
    • N-acetyl-(R)-cysteine
    • N-acetyl-aspartatylglutamate
    • N-acetylcycteine
    • N-acetyl-L-aspartyl-L-glutamate
    • N-acetyl-L-aspartyl-L-glutamic acid
    • SPAGLUMIC ACID
    • N-乙酰-L-半胱氨酸
    • mercapturic acid
    • Acetadote
    • L-Acetylcysteine
    • Broncholysin
    • Mucomyst
    • Fluimucil
    • Fluprowit
    • Parvolex
    • Fabrol
    • Airbron
    • Acetein
    • Fluimucetin
    • Acetylcysteinum
    • Acetilcisteina
    • Mucosolvin
    • Flumucetin
    • Mucosil
    • Brunac
    • Fluimicil Infantil
    • Lysomucil
    • Mucofilin
    • Respaire
    • Inspir
    • Exomuc
    • Mucolytikum Lappe
    • Mucolyticum Lappe
    • N-Acetyl cysteine
    • Mucolyticum
    • Neo-fluimucil
    • NAC-TB
    • Muco
    • CHEBI:22198
    • CCG-204176
    • SC2
    • ACETYLCYSTEINE [MI]
    • N Acetyl L cysteine
    • Acetylcysteine (USAN:USP:INN:BAN:JAN)
    • Cetylev
    • N-Acetyl-L-cysteine, Sigma Grade, >=99% (TLC), powder
    • Acetylcysteinum [INN-Latin]
    • SR-01000075439
    • Oristar nalc
    • SPECTRUM1500105
    • Mucret
    • Acetylcysteine Ph. Eur.
    • ACETYLCYSTEINE [WHO-DD]
    • N-Acetyl-L-cysteine, cell culture tested, BioReagent
    • Acetylcysteinum (INN-Latin)
    • KBioGR_000554
    • CAS-616-91-1
    • NCGC00022304-07
    • (2R)-2-acetylamino-3-mercapto-propionic acid
    • UNII-WYQ7N0BPYC
    • C06809
    • ACETYLCYSTEINE [USAN]
    • ACETYLCYSTEINE [USP-RS]
    • N-acetyl-L-cystein
    • cysteine, N-acetyl-
    • SCHEMBL5292
    • ACETYLCYSTEINE [JAN]
    • Muco sanigen
    • acetyl cysteine
    • Tris-NAC
    • N-Acetyl-L-cysteine & Tumor necrosis factor (TNF)
    • SDCCGSBI-0050069.P002
    • CHEMBL600
    • F1905-7178
    • DTXSID8048105
    • MUCOMYST (TN)
    • LP00081
    • (R)-2-acetylamino-3-mercaptopropanoic acid
    • (R)-2-Acetamido-3-mercaptopropanoicacid
    • Tox21_110877
    • SR-01000075439-5
    • HMS1920A11
    • NCGC00022304-05
    • Syntemucol
    • ACETYLCYSTEINE [USP MONOGRAPH]
    • N-Acetyl-L-cysteine, Vetec(TM) reagent grade, 98%
    • ACETYLCYSTEINE [ORANGE BOOK]
    • BSPBio_001794
    • propanoic acid, 2-acetylamino-3-mercapto-
    • Tixair
    • NCGC00260766-01
    • MLS000028419
    • BDBM50420190
    • D00221
    • HMS3655G11
    • component of Naxid
    • Acetylcysteine [USAN:USP:INN:BAN:JAN]
    • Mucolyticum-Lappe
    • WYQ7N0BPYC
    • NCGC00022304-23
    • Spectrum2_000086
    • acetylcysteine (n-acetyl-l-cysteine)
    • HMS3260A04
    • BRONCHOLYSIN (MUCOLYTIC)
    • GS-3121
    • ACETYLCYSTEINE (II)
    • (2R)-2-(acetylamino)-3-sulfanylpropanoic acid
    • NCGC00022304-06
    • N Acetylcysteine
    • N-acetyi-l-cysteine
    • (2R)-2-acetylamino-3-sulfanylpropanoic acid
    • NCGC00022304-21
    • AcCys
    • R05CB01
    • A0905
    • HMS2091G11
    • ACETYLCYSTEINE (EP MONOGRAPH)
    • ACETYLCYSTEINE [HSDB]
    • N-Acety-L-Cysteine
    • Ilube (eye drops)
    • Fluatox
    • ACETYLCYSTEINE (MART.)
    • N-A-C Sustain
    • Acetylcysteine, British Pharmacopoeia (BP) Reference Standard
    • Mercapturic acid, (R)-
    • Acetilcisteina (INN-Spanish)
    • MUCOSIL-20
    • ACETYLCYSTEINE [II]
    • MFCD00004880
    • DTXCID4021
    • AC-16071
    • A-1100
    • RK-0202
    • DB-038288
    • NCGC00022304-03
    • Mucocedyl
    • SMR000058377
    • CHEBI:28939
    • L-.alpha.-Acetamido-.beta.-mercaptopropionic acid
    • Acetylcysteine, European Pharmacopoeia (EP) Reference Standard
    • Q375613
    • Spectrum4_000137
    • ACETYLCYSTEINE [INN]
    • AKOS015841009
    • HSDB 3003
    • Z1143441555
    • Acetylcysteine, United States Pharmacopeia (USP) Reference Standard
    • AC-24117
    • Acid, Mercapturic
    • NS00069131
    • HMS3884E04
    • Tox21_110877_1
    • Tox21_500081
    • AB00051908_02
    • GTPL10945
    • KBio3_001294
    • NCGC00258631-01
    • N-Acetyl-N-Cysteine
    • 616-91-1
    • GLXC-15143
    • N-Acetyl-L-cysteine hydrochloride
    • SW199597-2
    • ACETYLCYSTEINE [VANDF]
    • CCG-38902
    • BP-12854
    • N-Acetyl-L-cysteine, Pharmaceutical Secondary Standard; Certified Reference Material
    • S01XA08
    • SPBio_000012
    • Lopac0_000081
    • J-507685
    • ACETYLCYSTEINE (USP MONOGRAPH)
    • (2R)-2-acetamido-3-sulfanylpropanoic acid
    • MUCOSIL-10
    • MLS006011563
    • DTXCID6028076
    • NCGC00022304-08
    • 2-Acetylamino-3-mercapto-propionate
    • L-Cysteine, N-acetyl-
    • CCRIS 3764
    • N-Acetyl-L-cysteine, SAJ special grade, 98.0-102.0%
    • (2R)-2-Acetamido-3-sulfanyl-propanoic acid
    • SR-01000075439-1
    • (R)-mercapturic acid
    • Mucolator
    • Spectrum5_000764
    • Tox21_201078
    • ACETYLCYSTEINE [EP MONOGRAPH]
    • V03AB23
    • DTXSID5020021
    • HMS3715D03
    • BRD-K59058747-001-19-1
    • AB00382974-12
    • SBI-0051272.P003
    • AC-L-CYS-OH
    • Acetylcysteine(N-acetylcysteine)
    • Naxid (Salt/Mix)
    • Ilube
    • NSC 111180
    • Spectrum3_000287
    • N-Acetyl-L-cysteine 100 microg/mL in Acetonitrile
    • EN300-72028
    • BRD-K59058747-001-20-9
    • N-acetylcystein
    • Cysteine, N-acetyl-, L-
    • NCGC00022304-04
    • CABC898A-E48B-4E13-9F72-98D0609A1854
    • NAC & TNF
    • EINECS 210-498-3
    • MLS001076125
    • N-acetyl-l-cys
    • Acetylcysteine Injection
    • NCGC00015086-04
    • Acetilcisteina [INN-Spanish]
    • SR-01000075439-3
    • N-Acetyl-L-cysteine, BioXtra, >=99% (TLC)
    • A 7250
    • Sodium 2-acetamido-3-mercaptopropionate
    • BRD-K59058747-001-18-3
    • Acetyl Cysteine,(S)
    • NSC111180
    • HMS2234J22
    • (r)-n-acetylcysteine
    • L-alpha-Acetamido-beta-mercaptopropionic acid
    • N-Acetyl-L-cysteine, USP grade
    • NCGC00022304-17
    • Fluimicil
    • Flumil
    • EU-0100081
    • AB00382974_13
    • Opera_ID_452
    • Acetylcysteine (JP18/USP/INN)
    • s1623
    • ACETYLCYSTEINE [MART.]
    • HY-B0215
    • DB06151
    • NSC-111180
    • ACETYLCYSTEINE (USP-RS)
    • L-Cysteine, N-acetyl- & Tumor necrosis factor
    • HY-B0215R
    • FA138512
    • FA10890
    • 210-498-3
    • Acetylcysteine (Standard)
    • N-Acetyl-L-cysteine - Non-animal and non-human origin
    • MDL： MFCD00004880
    • 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
    • InChI Key： PWKSKIMOESPYIA-BYPYZUCNSA-N
    • SMILES： SC[C@@H](C(=O)O)NC(C)=O
    • BRN： 1724426

Computed Properties

  • Exact Mass: 163.03000
  • Monoisotopic Mass: 163.03031432g/mol
  • Isotope Atom Count: 0
  • Hydrogen Bond Donor Count: 3
  • Hydrogen Bond Acceptor Count: 4
  • Heavy Atom Count: 10
  • Rotatable Bond Count: 3
  • Complexity: 148
  • Covalently-Bonded Unit Count: 1
  • Defined Atom Stereocenter Count: 1
  • Undefined Atom Stereocenter Count : 0
  • Defined Bond Stereocenter Count: 0
  • Undefined Bond Stereocenter Count: 0
  • Surface Charge: 0
  • Tautomer Count: 2
  • XLogP3: 0.4
  • Topological Polar Surface Area: 67.4

Experimental Properties

  • Color/Form: White crystalline powder with garlic like odor and sour taste. It is hygroscopic.
  • Density: 1.249 (estimate)
  • Melting Point: 106-108?°C (lit.)
  • Boiling Point: 407.7°C at 760 mmHg
  • Flash Point: 200.4℃
  • Refractive Index: 24 ° (C=JPC Method)
  • Solubility: H2O: 100?mg/mL with heating
  • Water Partition Coefficient: Soluble in water, ethanol, methanol, dimethyl sulfoxide, hot isopropyl alcohol, methyl acetate and ethyl acetate. Insoluble in chloroform and ether.
  • Stability/Shelf Life: Stable. Incompatible with strong oxidizing agents.
  • PSA: 105.20000
  • LogP: -0.10360
  • Solubility: Soluble in water or ethanol, insoluble in ether and chloroform.
  • Merck: 88
  • Specific Rotation: -35.1 oC (c=2,H2O)

Acetylcysteine Security Information

Acetylcysteine Customs Data

  • HS CODE：2930909090
  • Customs Data：

    China Customs Code:

    2930909090

    Overview:

    2930909090. Other organic sulfur compounds. VAT:17.0%. Tax refund rate:13.0%. Regulatory conditions:nothing. MFN tariff:6.5%. general tariff:30.0%

    Declaration elements:

    Product Name, component content, use to

    Summary:

    2930909090. other organo-sulphur compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Acetylcysteine Pricemore >>

Related Categories No. Product Name Cas No. Purity Specification Price update time Inquiry
Fluorochem
003631-25g
N-Acetyl-l-cysteine
 616-91-1 99%
25g
 ￡10.00 2022-03-01
Fluorochem
003631-100g
N-Acetyl-l-cysteine
 616-91-1 99%
100g
 ￡22.00 2022-03-01
Fluorochem
003631-500g
N-Acetyl-l-cysteine
 616-91-1 99%
500g
 ￡60.00 2022-03-01
NAN JING HUA XUE SHI JI GU FEN Co., Ltd.
C0685529343- 25g
Acetylcysteine
 616-91-1 99%
25g
 ￥ 68.2 2021-05-18
NAN JING HUA XUE SHI JI GU FEN Co., Ltd.
C0685529335- 100g
Acetylcysteine
 616-91-1 99%
100g
 ￥ 115.3 2021-05-18
XI GE MA AO DE LI QI （ SHANG HAI ） MAO YI Co., Ltd.
V900429-25G
Acetylcysteine
 616-91-1 98%
25g
 ￥291.18 2023-09-06
XI GE MA AO DE LI QI （ SHANG HAI ） MAO YI Co., Ltd.
V900429-100G
Acetylcysteine
 616-91-1 98%
100g
 ￥842.87 2023-09-06
XI GE MA AO DE LI QI （ SHANG HAI ） MAO YI Co., Ltd.
A7250-5G
Acetylcysteine
 616-91-1 99%
5g
 ￥484.22 2024-12-24
XI GE MA AO DE LI QI （ SHANG HAI ） MAO YI Co., Ltd.
A7250-10G
Acetylcysteine
 616-91-1 99%
10g
 ￥553.39 2024-12-24
XI GE MA AO DE LI QI （ SHANG HAI ） MAO YI Co., Ltd.
A7250-25G
Acetylcysteine
 616-91-1 99%
25g
 ￥981.16 2024-12-24

Acetylcysteine Suppliers

Suzhou Senfeida Chemical Co., Ltd
Gold Member
Audited Supplier Audited Supplier
(CAS:616-91-1)N-Acetyl-L-cysteine
Order Number:sfd4464
Stock Status:in Stock
Quantity:200kg
Purity:99.9%
Pricing Information Last Updated:Friday, 19 July 2024 14:33
Price ($):discuss personally
Amadis Chemical Company Limited
Gold Member
Audited Supplier Audited Supplier
(CAS:616-91-1)Acetylcysteine
Order Number:A930287
Stock Status:in Stock
Quantity:5kg
Purity:99%
Pricing Information Last Updated:Friday, 30 August 2024 15:00
Price ($):474.0
Tiancheng Chemical (Jiangsu) Co., Ltd
Gold Member
Audited Supplier Audited Supplier
(CAS:616-91-1)N-acetyl-L-cysteine
Order Number:LE18601;LE6339
Stock Status:in Stock
Quantity:25KG,200KG,1000KG
Purity:99%
Pricing Information Last Updated:Friday, 20 June 2025 12:19
Price ($):discuss personally
Shanghai Joy Biotech Ltd
Gold Member
Audited Supplier Audited Supplier
(CAS:616-91-1)N-Acetyl-L-cysteine
Order Number:JY210
Stock Status:in Stock
Quantity:100g; 1kg; 10kg; 25kg
Purity:98%
Pricing Information Last Updated:Friday, 30 May 2025 09:02
Price ($):discuss personally

Acetylcysteine Spectrogram

GC-MS
GC-MS
1H NMR Bruker Water
1H NMR

Acetylcysteine Related Literature

Related Categories

616-91-1 (Acetylcysteine) Related Products

Recommended suppliers
Suzhou Senfeida Chemical Co., Ltd
(CAS:616-91-1)N-Acetyl-L-cysteine
sfd4464
Purity:99.9%
Quantity:200kg
Price ($):Inquiry
Email
Amadis Chemical Company Limited
(CAS:616-91-1)Acetylcysteine
A930287
Purity:99%
Quantity:5kg
Price ($):474.0
Email