Isothiazolinones - mixture of CMI and MI,2.0-2.5% in water,PH:2.0-5.0 , CAS No.26172-55-4

CAS: 26172-55-4 Cat. No.: C183242 Molecular Weight: 149.6 EC Number: 247-500-7
AVAILABLE TO ORDER
GRADE & PURITY mixture of CMI and MI,2.0-2.5% in water,PH:2.0-5.0
Synonyms
Kathon CG 5243 | SCHEMBL111860 | 5-Chloro-2-methyl-3-isothiazolone (~90%) | 5-Chloro-2-methyl-4-isothiazolin-3-one, tech grade, >14% in water. CMI/MI >2.0 | Tox21_112689 | 5-CHLORO-2-METHYL-4-ISOTHIAZOLIN-3-ONE (ACTIVE INGREDIENT >14%, CMI/MI 2.5 - 4.0) |
Storage
Store at 2-8°C
Shipped In
Wet ice
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
1g
C183242-1g
2

$26.90

$31.90
Save $5.00 (15.67%)
5g
C183242-5g
3

$88.90

$103.90
Save $15.00 (14.44%)
10g
C183242-10g
3

$141.90

$165.90
Save $24.00 (14.47%)
25g
C183242-25g
3

$264.90

$309.90
Save $45.00 (14.52%)
100g
C183242-100g
2
$617.90
500g
C183242-500g
2

$1,324.90

$1,545.90
Save $221.00 (14.30%)
Enter a quantity for the sizes you want to add.
🧪

Why this grade

mixture of CMI and MI,2.0-2.5% in water,PH:2.0-5.0 for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Store at 2-8°C Ships Wet ice 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 1 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
Kathon CG 5243 | SCHEMBL111860 | 5-Chloro-2-methyl-3-isothiazolone (~90%) | 5-Chloro-2-methyl-4-isothiazolin-3-one, tech grade, >14% in water. CMI/MI >2.0 | Tox21_112689 | 5-CHLORO-2-METHYL-4-ISOTHIAZOLIN-3-ONE (ACTIVE INGREDIENT >14%, CMI/MI 2.5 - 4.0) |
Specifications & Purity
mixture of CMI and MI, 2.0-2.5% in water, PH:2.0-5.0
Biochemical and Physiological Mechanisms
PCAF histone acetyltransferase inhibitor (IC 50 = 2-3 μM). Antimicrobial. Active in vitro.
Storage
Store at 2-8°C
Shipped In
Wet ice
This product requires cold chain shipping. Ground and other economy services are not available.
Note
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour. Need more advice on solubility, usage and handling? Please visit our frequently asked questions (FAQ) page for more details.
Names and Identifiers
Pubchem Sid504753504
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/504753504
Canonical SmilesCN1C(=O)C=C(S1)Cl
IUPAC Name5-chloro-2-methyl-1,2-thiazol-3-one
InChIKeyDHNRXBZYEKSXIM-UHFFFAOYSA-N
INCHI1S/C4H4ClNOS/c1-6-4(7)2-3(5)8-6/h2H,1H3
Isomeric SMILES CN1C(=O)C=C(S1)Cl
Alternate CAS 2682-20-4
Molecular Weight 149.6
Reaxy-Rn 1210149
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=1210149&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
SuperclassOrganohalogen compounds
ClassAryl halides
SubclassAryl chlorides
Intermediate Tree Nodes Not available
Direct ParentAryl chlorides
Alternative Parents Vinylogous halides  Thiazoles  Heteroaromatic compounds  Lactams  Azacyclic compounds  Organopnictogen compounds  Organooxygen compounds  Organonitrogen compounds  Organochlorides  Organic oxides  Hydrocarbon derivatives  
Molecular FrameworkAromatic heteromonocyclic compounds
Substituents Aryl chloride - Azole - Thiazole - Vinylogous halide - Heteroaromatic compound - Lactam - Azacycle - Organoheterocyclic compound - Organic nitrogen compound - Hydrocarbon derivative - Organic oxide - Organooxygen compound - Organonitrogen compound - Organochloride - Organopnictogen compound - Organic oxygen compound - Aromatic heteromonocyclic compound
DescriptionThis compound belongs to the class of organic compounds known as aryl chlorides. These are organic compounds containing the acyl chloride functional group.
External Descriptors organochlorine compound - 1,2-thiazole
3D Structure
Interactive Chemical Structure Model





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.

14 results found

Lot NumberCertificate TypeDateItem
H2308259Certificate of AnalysisMay 20, 2026 C183242
L2510031Certificate of AnalysisDec 12, 2025 C183242
B2301605Certificate of AnalysisOct 30, 2025 C183242
L22151142Certificate of AnalysisSep 17, 2025 C183242
B2215548Certificate of AnalysisNov 19, 2024 C183242
B2215579Certificate of AnalysisNov 19, 2024 C183242
I2403025Certificate of AnalysisSep 10, 2024 C183242
E1807046Certificate of AnalysisJan 04, 2024 C183242
B2109150Certificate of AnalysisDec 25, 2023 C183242
B2109152Certificate of AnalysisDec 25, 2023 C183242
C2330392Certificate of AnalysisApr 14, 2023 C183242
G2212080Certificate of AnalysisJul 16, 2022 C183242
E2223293Certificate of AnalysisMay 25, 2022 C183242
B2215580Certificate of AnalysisNov 27, 2021 C183242

Show more ⌵

Chemical and Physical Properties
Melt Point(°C)45 - 46°C
Molecular Weight149.600 g/mol
XLogP30.900
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count2
Rotatable Bond Count0
Exact Mass148.97 Da
Monoisotopic Mass148.97 Da
Topological Polar Surface Area45.600 Ų
Heavy Atom Count8
Formal Charge0
Complexity156.000
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 Count1
Documents & Articles
Citations of This Product
References
1. Shifang Yang, Zexuan Zhang, Qianpeng Hou, Yunpeng Liu, Chi Gong.  (2024)  Preparation, characterisation and enhanced fungistatic properties of silicone rubber with different concentrations of CMIT/MIT.  High Voltage,      [PMID:] [10.1049/hve2.12473]
Solution Calculators
Reviews

Customer Reviews

Shall we send you a message when we have discounts available?

Remind me later

Thank you! Please check your email inbox to confirm.

Oops! Notifications are disabled.