Cloxacillin Sodium Salt Monohydrate - ≥98% , CAS No.7081-44-9

CAS: 7081-44-9 Cat. No.: C134100 Molecular Weight: 457.86(as Anhydrous) Beilstein Registry Number: 4103180 EC Number: 629-588-2 PubChem CID: 23675743
AVAILABLE TO ORDER
GRADE & PURITY ≥98%
Synonyms
CLOXACILLIN SODIUM [USP MONOGRAPH] | Methocillin-s | s2564 | Tegopen | 4-THIA-1-AZABICYCLO(3.2.0)HEPTANE-2-CARBOXYLIC ACID, 6-(((3-(2-CHLOROPHENYL)-5-METHYL-4-ISOXAZOLYL)CARBONYL)AMINO)-3,3-DIMETHYL-7-OXO-, MONOSODIUM SALT, MONOHYDRATE, (2S-(2.ALPHA.,5.AL
Storage
Store at 2-8°C,Argon charged
Shipped In
Wet ice
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
1g
C134100-1g
3
$47.90
5g
C134100-5g
2
$154.90
25g
C134100-25g
2
$547.90
Enter a quantity for the sizes you want to add.
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Why this grade

≥98% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Store at 2-8°C,Argon charged 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 2 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

Cloxacillin Sodium is a sodium salt of cloxacillin that is a penicillinase-resistant, acid resistant, semi-synthetic penicillin.
A semi-synthetic antibiotic related to penicillin

Specifications

Synonyms
CLOXACILLIN SODIUM [USP MONOGRAPH] | Methocillin-s | s2564 | Tegopen | 4-THIA-1-AZABICYCLO(3.2.0)HEPTANE-2-CARBOXYLIC ACID, 6-(((3-(2-CHLOROPHENYL)-5-METHYL-4-ISOXAZOLYL)CARBONYL)AMINO)-3, 3-DIMETHYL-7-OXO-, MONOSODIUM SALT, MONOHYDRATE, (2S-(2.ALPHA., 5.AL
Specifications & Purity
≥98%
Biochemical and Physiological Mechanisms
Cloxacillin is a semi-synthetic β-lactam antibiotic, related to penicillin, which suppresses the growth of gram-positive bacteria such as Staphylococcus by inhibiting the synthesis of peptidoglycan. Furthermore, cloxacillin inactivates the enzyme β-lactam
Storage
Store at 2-8°C, Argon charged
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.
Purity
≥98%
Names and Identifiers
Canonical SmilesCC1=C(C(=NO1)C2=CC=CC=C2Cl)C(=O)NC3C4N(C3=O)C(C(S4)(C)C)C(=O)[O-].O.[Na+]
IUPAC Namesodium;(2S,5R,6R)-6-[[3-(2-chlorophenyl)-5-methyl-1,2-oxazole-4-carbonyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate;hydrate
InChIKeyKCUWTKOTPIUBRI-VICXVTCVSA-M
INCHI1S/C19H18ClN3O5S.Na.H2O/c1-8-11(12(22-28-8)9-6-4-5-7-10(9)20)15(24)21-13-16(25)23-14(18(26)27)19(2,3)29-17(13)23;;/h4-7,13-14,17H,1-3H3,(H,21,24)(H,26,27);;1H2/q;+1;/p-1/t13-,14+,17-;;/m1../s1
Isomeric SMILES CC1=C(C(=NO1)C2=CC=CC=C2Cl)C(=O)N[C@H]3[C@@H]4N(C3=O)[C@H](C(S4)(C)C)C(=O)[O-].O.[Na+]
Alternate CAS 61-72-3
PubChem CID 23675743
Molecular Weight 457.86(as Anhydrous)
Beilstein 4103180

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
SuperclassOrganic acids and derivatives
ClassCarboxylic acids and derivatives
SubclassAmino acids, peptides, and analogues
Intermediate Tree Nodes Amino acids and derivatives - Alpha amino acids and derivatives
Direct ParentN-acyl-alpha amino acids and derivatives
Alternative Parents Penams  Chlorobenzenes  Aryl chlorides  Thiazolidines  Tertiary carboxylic acid amides  Heteroaromatic compounds  Isoxazoles  Azetidines  Thiohemiaminal derivatives  Azacyclic compounds  Propargyl-type 1,3-dipolar organic compounds  Carboximidic acids  Carboxylic acids  Oxacyclic compounds  Dialkylthioethers  Monocarboxylic acids and derivatives  Organic metal halides  Hydrocarbon derivatives  Organonitrogen compounds  Carbonyl compounds  Organopnictogen compounds  Organic oxides  Organic sodium salts  Organic zwitterions  Organochlorides  
Molecular FrameworkAromatic heteropolycyclic compounds
Substituents N-acyl-alpha amino acid or derivatives - Penam - Halobenzene - Chlorobenzene - Monocyclic benzene moiety - Benzenoid - Aryl halide - Aryl chloride - Beta-lactam - Heteroaromatic compound - Thiazolidine - Isoxazole - Tertiary carboxylic acid amide - Azole - Carboxamide group - Lactam - Azetidine - Organic metal halide - Carboximidic acid - Carboximidic acid derivative - Oxacycle - Carboxylic acid - Azacycle - Organic alkali metal salt - Organoheterocyclic compound - Monocarboxylic acid or derivatives - Dialkylthioether - Organic 1,3-dipolar compound - Propargyl-type 1,3-dipolar organic compound - Thioether - Hemithioaminal - Organic sodium salt - Carbonyl group - Organic nitrogen compound - Organic salt - Organohalogen compound - Organochloride - Organonitrogen compound - Organooxygen compound - Organic oxygen compound - Organopnictogen compound - Organic oxide - Hydrocarbon derivative - Organic zwitterion - Aromatic heteropolycyclic compound
DescriptionThis compound belongs to the class of organic compounds known as n-acyl-alpha amino acids and derivatives. These are compounds containing an alpha amino acid (or a derivative thereof) which bears an acyl group at its terminal nitrogen atom.
External Descriptors hydrate - organic sodium salt
3D Structure
Interactive Chemical Structure Model





Associated Targets(Human)
SLCO1B1 Tchem Solute carrier organic anion transporter family member 1B1 (2672 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
SLCO1B3 Tchem Solute carrier organic anion transporter family member 1B3 (2517 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
GLS Tchem Glutaminase kidney isoform, mitochondrial (16997 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Associated Targets(non-human)
rep Replicase polyprotein 1ab (378 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.

4 results found

Lot NumberCertificate TypeDateItem
I2207499Certificate of AnalysisMar 11, 2026 C134100
I2207501Certificate of AnalysisMar 11, 2026 C134100
I2207592Certificate of AnalysisMar 11, 2026 C134100
E1529094Certificate of AnalysisDec 12, 2022 C134100
Chemical and Physical Properties
SolubilitySoluble in water (55 mg/ml at 25 °C), alcohol (1:30), methanol, ethanol (25 mg/ml at 25 °C), and DMSO (55 mg/ml at 25 °C).
SensitivityHygroscopic,Heat Sensitive
Specific Rotation[α]164° (C=1,H2O)
Melt Point(°C)170°C
Molecular Weight475.900 g/mol
XLogP3
Hydrogen Bond Donor Count2
Hydrogen Bond Acceptor Count8
Rotatable Bond Count4
Exact Mass475.058 Da
Monoisotopic Mass475.058 Da
Topological Polar Surface Area142.000 Ų
Heavy Atom Count31
Formal Charge0
Complexity728.000
Isotope Atom Count0
Defined Atom Stereocenter Count3
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count3
Citations of This Product
References
1. Chang Sun, Jian Lu, Yilin Wu, Minjia Meng, Chao Yu, Zeqing Dong, Muning Chen, Yongsheng Yan, Yan Sun.  (2020)  Imitated Core-Shell Molecularly Imprinted Membranes for Selective Separation Applications: A Synergetic Strategy by Polydopamine and SiO2.  Journal of the Taiwan Institute of Chemical Engineers,      [PMID:] [10.1016/j.jtice.2020.10.016]
2. Yanni Chen, Yongwei Wang, Liqiang Liu, Xiaoling Wu, Liguang Xu, Hua Kuang, Aike Li, Chuanlai Xu.  (2015)  A gold immunochromatographic assay for the rapid and simultaneous detection of fifteen β-lactams.  Nanoscale,  (39): (16381-16388).  [PMID:26394361] [10.1039/C5NR04987C]
Solution Calculators
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