2-Methylisothiazol-3(2H)-one compound with 5-chloro-2-methylisothiazol-3(2H)-one - 14% in H2O , CAS No.55965-84-9

CAS: 55965-84-9 Cat. No.: M193940 Molecular Weight: 264.75 EC Number: 611-341-5
AVAILABLE TO ORDER
GRADE & PURITY 14% in H2O
Synonyms
2-Methylisothiazol-3(2H)-one 5-chloro-2-Methylisothiazol-3(2H)-one | Kathon CG/ICP II | Bio-Perge | 3(2H)-Isothiazolone, 5-chloro-2-methyl-, mixt. with 2-methyl-3(2H)-isothiazolone | Tret-O-Lite XC 215 | Q26841195 | Zonen F | 2-Methylisothiazol-3(2H)-one
Storage
Room temperature
Shipped In
Normal
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
5g
M193940-5g
4
$9.90
25g
M193940-25g
9
$17.90
100g
M193940-100g
1-2 wks(?)
Item is derived from our semi-finished stock and is processed in 1-2 weeks.
$42.90
500g
M193940-500g
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.
$171.90
Enter a quantity for the sizes you want to add.
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Why this grade

14% in H2O for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Room temperature Ships Normal Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 5 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
2-Methylisothiazol-3(2H)-one 5-chloro-2-Methylisothiazol-3(2H)-one | Kathon CG/ICP II | Bio-Perge | 3(2H)-Isothiazolone, 5-chloro-2-methyl-, mixt. with 2-methyl-3(2H)-isothiazolone | Tret-O-Lite XC 215 | Q26841195 | Zonen F | 2-Methylisothiazol-3(2H)-one
Specifications & Purity
14% in H2O
Storage
Room temperature
Shipped In
Normal
Names and Identifiers
Pubchem Sid488183330
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/488183330
Canonical SmilesCN1C(=O)C=CS1.CN1C(=O)C=C(S1)Cl
IUPAC Name5-chloro-2-methyl-1,2-thiazol-3-one;2-methyl-1,2-thiazol-3-one
InChIKeyQYYMDNHUJFIDDQ-UHFFFAOYSA-N
INCHI1S/C4H4ClNOS.C4H5NOS/c1-6-4(7)2-3(5)8-6;1-5-4(6)2-3-7-5/h2H,1H3;2-3H,1H3
Isomeric SMILES CN1C(=O)C=CS1.CN1C(=O)C=C(S1)Cl
Molecular Weight 264.75
Reaxy-Rn 11333839
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=11333839&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganoheterocyclic compounds
ClassAzoles
SubclassThiazoles
Intermediate Tree Nodes Not available
Direct ParentThiazoles
Alternative Parents Heteroaromatic compounds  Lactams  Azacyclic compounds  Organopnictogen compounds  Organooxygen compounds  Organonitrogen compounds  Organic oxides  Hydrocarbon derivatives  
Molecular FrameworkNot available
Substituents Heteroaromatic compound - Thiazole - Lactam - Azacycle - Organic nitrogen compound - Organic oxygen compound - Organopnictogen compound - Organic oxide - Hydrocarbon derivative - Organooxygen compound - Organonitrogen compound - Aromatic heteromonocyclic compound
DescriptionThis compound belongs to the class of organic compounds known as thiazoles. These are heterocyclic compounds containing a five-member aromatic ring made up of one sulfur atom, one nitrogen, and three carbon atoms.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Associated Targets(non-human)
Dolichospermum flos-aquae (8 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Mechanisms of Action
Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

24 results found

Lot NumberCertificate TypeDateItem
B2313038Certificate of AnalysisOct 30, 2025 M193940
G2509075Certificate of AnalysisFeb 28, 2025 M193940
F2622042Certificate of AnalysisFeb 28, 2025 M193940
C2513655Certificate of AnalysisFeb 28, 2025 M193940
C2513870Certificate of AnalysisFeb 28, 2025 M193940
C2513871Certificate of AnalysisFeb 28, 2025 M193940
K1828066Certificate of AnalysisJun 15, 2024 M193940
K1828067Certificate of AnalysisJun 15, 2024 M193940
E2420170Certificate of AnalysisMar 12, 2024 M193940
E2420169Certificate of AnalysisMar 12, 2024 M193940
K2405072Certificate of AnalysisFeb 23, 2023 M193940
F2427079Certificate of AnalysisFeb 23, 2023 M193940
F2427010Certificate of AnalysisFeb 23, 2023 M193940
C2316977Certificate of AnalysisFeb 23, 2023 M193940
C2316976Certificate of AnalysisFeb 23, 2023 M193940
C2316966Certificate of AnalysisFeb 23, 2023 M193940
C2316965Certificate of AnalysisFeb 23, 2023 M193940
C2316964Certificate of AnalysisFeb 23, 2023 M193940
C2316956Certificate of AnalysisFeb 23, 2023 M193940
C2316955Certificate of AnalysisFeb 23, 2023 M193940
C2316891Certificate of AnalysisFeb 23, 2023 M193940
F2102393Certificate of AnalysisMar 06, 2021 M193940
F2209143Certificate of AnalysisMar 06, 2021 M193940
H2210046Certificate of AnalysisMar 06, 2021 M193940

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Chemical and Physical Properties
Molecular Weight264.800 g/mol
XLogP3
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count4
Rotatable Bond Count0
Exact Mass263.979 Da
Monoisotopic Mass263.979 Da
Topological Polar Surface Area91.200 Ų
Heavy Atom Count15
Formal Charge0
Complexity277.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count2
Documents & Articles
Citations of This Product
References
1. Xuwen Gao, Xiaoxuan Ren, Yaojia Ai, Mengwei Li, Bin Zhang, Guizheng Zou.  (2023)  Luminophore-Surface-Engineering-Enabled Low-Triggering-Potential and Coreactant-Free Electrochemiluminescence for Protein Determination.  ANALYTICAL CHEMISTRY,      [PMID:37083347] [10.1021/acs.analchem.3c00250]
2. Tao Peng, Lianhua Dong, Xiaoli Feng, Yi Yang, Xia Wang, Chunyan Niu, Zhanwei Liang, Wang Qu, Qingcui Zou, Xinhua Dai, Minghua Li, Xiang Fang.  (2023)  Relationship between SARS-CoV-2 nucleocapsid protein and N gene and its application in antigen testing kits evaluation.  TALANTA,      [PMID:36963149] [10.1016/j.talanta.2023.124462]
3. Hao Chi, Sheng Tian, Xiu Li, Yuchu Chen, Qiumin Xu, Qixiao Wang, Wenwan Shi, Michael Adu-Frimpong, Shanshan Tong.  (2023)  Construction of lipid raft-coupled agarose gels as bioaffinity chromatography materials and validation with tropomyosin-related kinase A-targeted drugs.  JOURNAL OF CHROMATOGRAPHY A,      [PMID:36731332] [10.1016/j.chroma.2023.463803]
4. Chen Ma, Dingnan Lu, Fangyuan Zhou, Jiayue Luo, Huihui Gan, Weidong He, Pradeep U. Kurup, David Z. Zhu.  (2024)  Detection of Helicobacter pylori (H. pylori) Cytoplasmic Protein (ureB) in Wastewater using an Electrochemical Competitive Immunosensor.  IEEE SENSORS JOURNAL,      [PMID:] [10.1109/JSEN.2024.3375377]
5. Tao Zhou, Zhou Liu, Xudong Ma, Chaofeng Cen, Zhangwei Huang, Yi Lu, Tiantian Kong, Cheng Qi.  (2024)  Thermally-resilient, phase-invertible, ultra-stable all-aqueous compartments by pH-modulated protein colloidal particles.  JOURNAL OF COLLOID AND INTERFACE SCIENCE,      [PMID:38537589] [10.1016/j.jcis.2024.03.155]
Solution Calculators
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