Methyl Methanesulfonate - ≥98% , CAS No.66-27-3

CAS: 66-27-3 Cat. No.: M301750 Molecular Weight: 110.13 EC Number: 200-625-0

GRADE & PURITY ≥98%

Synonyms

CAS-66-27-3 | EN300-1238092 | 4-04-00-00011 (Beilstein Handbook Reference) | DTXCID10845 | FT-0628902 | methylmesylate | Spectrum2_000917 | methanesulfonate methyl | METHYL METHANESULFONATE [HSDB] | Spectrum4_000776 | NCGC00090697-05 | CCG-39749 | Dimethy

Storage

Room temperature

Shipped In

Normal

Specifications

Synonyms

CAS-66-27-3 | EN300-1238092 | 4-04-00-00011 (Beilstein Handbook Reference) | DTXCID10845 | FT-0628902 | methylmesylate | Spectrum2_000917 | methanesulfonate methyl | METHYL METHANESULFONATE [HSDB] | Spectrum4_000776 | NCGC00090697-05 | CCG-39749 | Dimethy

Specifications & Purity

≥98%

Storage

Room temperature

Shipped In

Normal

Purity

≥98%

Names and Identifiers

• Pubchem Sid: 488179817
• Pubchem Sid Url: https://pubchem.ncbi.nlm.nih.gov/substance/488179817
• Canonical Smiles: COS(=O)(=O)C
• IUPAC Name: methyl methanesulfonate
• InChIKey: MBABOKRGFJTBAE-UHFFFAOYSA-N
• INCHI: 1S/C2H6O3S/c1-5-6(2,3)4/h1-2H3
• Isomeric SMILES: COS(=O)(=O)C
• UN Number: 2922
• Packing Group: I
• Molecular Weight: 110.13
• Reaxy-Rn: 1098586
• Reaxys-RN_link_address: https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=1098586&ln=

Taxonomic Classification

Taxonomy Tree

• Kingdom Organic compounds
  • Superclass Organic acids and derivatives
    • Class Organic sulfonic acids and derivatives
      • Subclass Organosulfonic acids and derivatives

• Kingdom: Organic compounds
• Superclass: Organic acids and derivatives
• Class: Organic sulfonic acids and derivatives
• Subclass: Organosulfonic acids and derivatives
• Intermediate Tree Nodes: Not available
• Direct Parent: Organosulfonic acid esters
• Alternative Parents: Sulfonic acid esters Sulfonyls Methanesulfonates Organooxygen compounds Organic oxides Hydrocarbon derivatives
• Molecular Framework: Aliphatic acyclic compounds
• Substituents: Organosulfonic acid ester - Sulfonic acid ester - Sulfonyl - Methanesulfonate - Organic oxygen compound - Organic oxide - Hydrocarbon derivative - Organosulfur compound - Organooxygen compound - Aliphatic acyclic compound
• Description: This compound belongs to the class of organic compounds known as organosulfonic acid esters. These are esters of sulfonic acid, which have the general structure RS(=O)2OR' (R,R' = organyl, not H).
• External Descriptors: an organosulfonate

Data sources

1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61.

DOI: 10.1186/s13321-016-0174-y

Associated Targets(Human)

PDE5A Tclin Phosphodiesterase 5A (5113 Activities)

Discover Target: PDE5A

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

EGFR Tclin Epidermal growth factor receptor erbB1 (33727 Activities)

Discover Target: EGFR

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

CA2 Tclin Carbonic anhydrase II (17698 Activities)

Discover Target: CA2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

ESR1 Tclin Estrogen receptor alpha (17718 Activities)

Discover Target: ESR1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

HMGCR Tclin HMG-CoA reductase (2475 Activities)

Discover Target: HMGCR

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

NR3C1 Tclin Glucocorticoid receptor (14987 Activities)

Discover Target: NR3C1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

INSR Tclin Insulin receptor (5558 Activities)

Discover Target: INSR

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

PGR Tclin Progesterone receptor (8562 Activities)

Discover Target: PGR

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

ADRB2 Tclin Beta-2 adrenergic receptor (11824 Activities)

Discover Target: ADRB2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

CHRM2 Tclin Muscarinic acetylcholine receptor M2 (10671 Activities)

Discover Target: CHRM2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

ADRB1 Tclin Beta-1 adrenergic receptor (6630 Activities)

Discover Target: ADRB1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

HTR1A Tclin Serotonin 1a (5-HT1a) receptor (14969 Activities)

Discover Target: HTR1A

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

ADRA2A Tclin Alpha-2a adrenergic receptor (9450 Activities)

Discover Target: ADRA2A

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

AR Tclin Androgen Receptor (11781 Activities)

Discover Target: AR

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

CHRM1 Tclin Muscarinic acetylcholine receptor M1 (12690 Activities)

Discover Target: CHRM1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

ACE Tclin Angiotensin-converting enzyme (1423 Activities)

Discover Target: ACE

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

DRD2 Tclin Dopamine D2 receptor (23596 Activities)

Discover Target: DRD2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

TSHR Tclin Thyroid stimulating hormone receptor (29986 Activities)

Discover Target: TSHR

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

MAOA Tclin Monoamine oxidase A (11911 Activities)

Discover Target: MAOA

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

CNR1 Tclin Cannabinoid CB1 receptor (20913 Activities)

Discover Target: CNR1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

DRD1 Tclin Dopamine D1 receptor (9720 Activities)

Discover Target: DRD1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

DRD4 Tchem Dopamine D4 receptor (7907 Activities)

Discover Target: DRD4

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

ACHE Tclin Acetylcholinesterase (18204 Activities)

Discover Target: ACHE

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

PTGS1 Tclin Cyclooxygenase-1 (9233 Activities)

Discover Target: PTGS1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

SLC6A2 Tclin Norepinephrine transporter (10102 Activities)

Discover Target: SLC6A2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

HRH2 Tclin Histamine H2 receptor (5428 Activities)

Discover Target: HRH2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

ADRA1D Tclin Alpha-1d adrenergic receptor (4171 Activities)

Discover Target: ADRA1D

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

HTR1B Tclin Serotonin 1b (5-HT1b) receptor (2801 Activities)

Discover Target: HTR1B

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

HTR2A Tclin Serotonin 2a (5-HT2a) receptor (14758 Activities)

Discover Target: HTR2A

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

HTR2C Tclin Serotonin 2c (5-HT2c) receptor (11471 Activities)

Discover Target: HTR2C

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

ADORA1 Tclin Adenosine A1 receptor (17603 Activities)

Discover Target: ADORA1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

CALCR Tclin Calcitonin receptor (2215 Activities)

Discover Target: CALCR

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

SLC6A4 Tclin Serotonin transporter (12625 Activities)

Discover Target: SLC6A4

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

ADRA1A Tclin Alpha-1a adrenergic receptor (8359 Activities)

Discover Target: ADRA1A

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

PTGS2 Tclin Cyclooxygenase-2 (13999 Activities)

Discover Target: PTGS2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

HRH1 Tclin Histamine H1 receptor (7573 Activities)

Discover Target: HRH1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

ADRA1B Tclin Alpha-1b adrenergic receptor (2912 Activities)

Discover Target: ADRA1B

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

OPRM1 Tclin Mu opioid receptor (19785 Activities)

Discover Target: OPRM1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

DRD3 Tclin Dopamine D3 receptor (14368 Activities)

Discover Target: DRD3

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

AVPR1A Tclin Vasopressin V1a receptor (5412 Activities)

Discover Target: AVPR1A

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

OPRD1 Tclin Delta opioid receptor (15096 Activities)

Discover Target: OPRD1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

OPRK1 Tclin Kappa opioid receptor (16155 Activities)

Discover Target: OPRK1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

SLC6A3 Tclin Dopamine transporter (10535 Activities)

Discover Target: SLC6A3

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

KCNH2 Tclin HERG (29587 Activities)

Discover Target: KCNH2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

HTR4 Tclin Serotonin 4 (5-HT4) receptor (2068 Activities)

Discover Target: HTR4

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

ESR2 Tclin Estrogen receptor beta (9272 Activities)

Discover Target: ESR2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

CYSLTR1 Tclin Cysteinyl leukotriene receptor 1 (2118 Activities)

Discover Target: CYSLTR1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

ERBB2 Tclin Receptor protein-tyrosine kinase erbB-2 (7851 Activities)

Discover Target: ERBB2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

CHRM4 Tclin Muscarinic acetylcholine receptor M4 (6041 Activities)

Discover Target: CHRM4

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

CHRM5 Tclin Muscarinic acetylcholine receptor M5 (4677 Activities)

Discover Target: CHRM5

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Associated Targets(non-human)

Agtr2 Angiotensin II type 2 (AT-2) receptor (803 Activities)

Discover Target: Agtr2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Mc4r Melanocortin receptor 4 (1205 Activities)

Discover Target: Mc4r

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Ltc4s Leukotriene C4 synthase (1 Activities)

Discover Target: Ltc4s

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Sigmar1 Sigma opioid receptor (160 Activities)

Discover Target: Sigmar1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Npy1r Neuropeptide Y receptor type 1 (8 Activities)

Discover Target: Npy1r

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Cckar Cholecystokinin A receptor (90 Activities)

Discover Target: Cckar

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Nos2 Nitric oxide synthase, inducible (3573 Activities)

Discover Target: Nos2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Mapk1 MAP kinase ERK2 (650 Activities)

Discover Target: Mapk1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Mmp9 Matrix metalloproteinase 9 (38 Activities)

Discover Target: Mmp9

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Caulobacter vibrioides (128 Activities)

Explore this target

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Escherichia coli (133304 Activities)

Explore this target

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Saccharomyces cerevisiae (19171 Activities)

Explore this target

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Mus musculus (284745 Activities)

Explore this target

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Rattus norvegicus (775804 Activities)

Explore this target

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

L1210 (27553 Activities)

Explore this target

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Calf thymus DNA (4845 Activities)

Explore this target

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Abcb1 Multidrug resistance protein 1 (79 Activities)

Discover Target: Abcb1

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Nfe2l2 Nuclear factor erythroid 2-related factor 2 (214 Activities)

Discover Target: Nfe2l2

Activity Type	Relation	Activity value	Units	Action Type	Journal	PubMed Id	doi	Assay Aladdin ID

Mechanisms of Action

Chemical and Physical Properties

• Solubility: Very soluble in water.Soluble in ether, alcohol, dimethylformamide
• Refractive Index: 1.414
• Flash Point(°C): 104 °C
• Boil Point(°C): 202-203 °C
• Molecular Weight: 110.130 g/mol
• XLogP3: -0.400
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 3
• Rotatable Bond Count: 1
• Exact Mass: 110.004 Da
• Monoisotopic Mass: 110.004 Da
• Topological Polar Surface Area: 51.800 Ų
• Heavy Atom Count: 6
• Formal Charge: 0
• Complexity: 105.000
• Isotope Atom Count: 0
• Defined Atom Stereocenter Count: 0
• Undefined Atom Stereocenter Count: 0
• Defined Bond Stereocenter Count: 0
• Undefined Bond Stereocenter Count: 0
• The total count of all stereochemical bonds: 0
• Covalently-Bonded Unit Count: 1

References

1. Qing-Zheng Zhang, Chun-Bo Su, San-Jun Shi, Yue Gao, Rong-Fu Huang.  (2023)  Label-Free and Sensitive Electrochemical Detection of DNA Methylation Damage Based on DNA Glycosylase Recognition and Excision Coupled with Exonuclease III Amplification.  JOURNAL OF THE ELECTROCHEMICAL SOCIETY,  170  (11): (117513).  [PMID:] [10.1149/1945-7111/ad0b48]

2. Bianxia Li, Zhuocheng Jin, Fan Yang, Huanan Li, Jiashu Liu, Zhengbing Jiang.  (2023)  Proteomic investigation reveals the role of bacterial laccase from Bacillus pumilus in oxidative stress defense.  Journal of Proteomics,      [PMID:37981008] [10.1016/j.jprot.2023.105047]

3. Yuting Sun, Hui Yang, Jiaqi Yuan, Limin Wang, Shanshan Song, Rongrong Chen, Xubin Bao, Li Jia, Tiantian Yang, Xiaofei Zhang, Qian He, Yong Gan, Zehong Miao, Jinxue He, Chunhao Yang.  (2023)  YCH1899, a Highly Effective Phthalazin-1(2H)-one Derivative That Overcomes Resistance to Prior PARP Inhibitors.  JOURNAL OF MEDICINAL CHEMISTRY,      [PMID:37605459] [10.1021/acs.jmedchem.3c00821]

4. Jiashu Liu, Jianhui Chen, Kangjia Zuo, Huanan Li, Fang Peng, Qiuping Ran, Rui Wang, Zhengbing Jiang, Huiting Song.  (2021)  Chemically induced oxidative stress improved bacterial laccase-mediated degradation and detoxification of the synthetic dyes.  ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,      [PMID:34597843] [10.1016/j.ecoenv.2021.112823]

5. Qingying Shi, Jingchun Tang, Xiaomei Liu, Rutao Liu.  (2021)  Ultraviolet-induced photodegradation elevated the toxicity of polystyrene nanoplastics on human lung epithelial A549 cells.  Environmental Science-Nano,  8  (9): (2660-2675).  [PMID:] [10.1039/D1EN00465D]

6. Zhongyi Cong, Jingyuan Jiang, Mengyuan Li, Chenqi Yan, Jiayin Li, Xinmin Zhang.  (2025)  Fmp45 promotes Rad53 dephosphorylation via Ptc2 interaction to attenuate checkpoint signaling and maintain genome stability.  Journal of Genetic Engineering and Biotechnology,      [PMID:41386832] [10.1016/j.jgeb.2025.100567]

7. Ying Li, Xiwen Zhang, Yiyu Wang, Xue Mu, Yuanbo Tu, Peng Sun, Yaolong Wang, Gongjun Yang, Lifeng Kang, Chunyong Wu, Junying Zhang.  (2025)  Photoactivated Nanowires as In Situ Transmembrane Electron Tunnels for Dual-Model Monitoring of Intracellular Biomarkers.  ANALYTICAL CHEMISTRY,      [PMID:40237383] [10.1021/acs.analchem.4c06279]

8. Xuemei Hu, Siying Che, Haiyan Fu, Yuanbin She.  (2026)  Farewell to enzymes and organic solvents: an ionic liquid-based new paradigm for colorimetric sensing of Hg2+.  SENSORS AND ACTUATORS B-CHEMICAL,      [PMID:] [10.1016/j.snb.2026.140170]