4-Chloro-1-naphthol - ≥99% , CAS No.604-44-4

CAS: 604-44-4 Cat. No.: C109038 Molecular Weight: 178.61 Beilstein Registry Number: 509750 EC Number: 210-068-5
AVAILABLE TO ORDER
GRADE & PURITY ≥99%
Synonyms
4C1N 4-CN | 4-Chloro-1-naphthol, >=95.0% (HPLC), tablet (~32 mg each) | 4-Chloro-1-naphthol, for analytical purposes, >=99.0% | 4-chloronaphthol | Z104477546 | LVSPDZAGCBEQAV-UHFFFAOYSA- | C2291 | STR01788 | 1-chloro-4-naphthol | C-5180 | SY045975 | 1-Chl
Storage
Store at -20°C,Argon charged
Shipped In
Ice chest + Ice pads
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
1g
C109038-1g
5
$43.90
5g
C109038-5g
5
$129.90
25g
C109038-25g
5
$449.90
Enter a quantity for the sizes you want to add.
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Why this grade

≥99% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Store at -20°C,Argon charged Ships Ice chest + Ice pads 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 10 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

4-Chloro-1-naphthol is primarily used for the detection of proteins, it gives a characteristic purple precipitate and the reactions are easily controllable. It can be used as a substitute for benzidine compounds, which are considered to be carcinogenic.

Specifications

Synonyms
4C1N 4-CN | 4-Chloro-1-naphthol, >=95.0% (HPLC), tablet (~32 mg each) | 4-Chloro-1-naphthol, for analytical purposes, >=99.0% | 4-chloronaphthol | Z104477546 | LVSPDZAGCBEQAV-UHFFFAOYSA- | C2291 | STR01788 | 1-chloro-4-naphthol | C-5180 | SY045975 | 1-Chl
Specifications & Purity
≥99%
Biochemical and Physiological Mechanisms
Chromogenic peroxidase substrate that results in a precipitate that is blue to blue-purple in color and can be observed visually. Used for both western blotting and immunohistochemical staining. Can be used as a substitute in the myeloperoxidase stain for
Storage
Store at -20°C, Argon charged
Shipped In
Ice chest + Ice pads
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
≥99%
Names and Identifiers
Pubchem Sid488181433
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/488181433
Canonical SmilesC1=CC=C2C(=C1)C(=CC=C2Cl)O
IUPAC Name4-chloronaphthalen-1-ol
InChIKeyLVSPDZAGCBEQAV-UHFFFAOYSA-N
INCHI1S/C10H7ClO/c11-9-5-6-10(12)8-4-2-1-3-7(8)9/h1-6,12H
Isomeric SMILES C1=CC=C2C(=C1)C(=CC=C2Cl)O
WGK Germany 3
Molecular Weight 178.61
Beilstein 509750
Reaxy-Rn 509750
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=509750&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
SuperclassBenzenoids
ClassNaphthalenes
SubclassNaphthols and derivatives
Intermediate Tree Nodes Not available
Direct ParentNaphthols and derivatives
Alternative Parents Chloronaphthalenes  1-hydroxy-2-unsubstituted benzenoids  Aryl chlorides  Organooxygen compounds  Organochlorides  Hydrocarbon derivatives  
Molecular FrameworkAromatic homopolycyclic compounds
Substituents Chloronaphthalene - 1-naphthol - 1-hydroxy-2-unsubstituted benzenoid - Aryl halide - Aryl chloride - Organic oxygen compound - Hydrocarbon derivative - Organooxygen compound - Organochloride - Organohalogen compound - Aromatic homopolycyclic compound
DescriptionThis compound belongs to the class of organic compounds known as naphthols and derivatives. These are naphthalene derivatives carrying one or more hydroxyl (-OH) groups at any ring position.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





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.

7 results found

Lot NumberCertificate TypeDateItem
C2507143Certificate of AnalysisMar 12, 2025 C109038
C2316653Certificate of AnalysisMar 20, 2023 C109038
C2316655Certificate of AnalysisMar 20, 2023 C109038
C2316656Certificate of AnalysisMar 20, 2023 C109038
C2316657Certificate of AnalysisMar 20, 2023 C109038
C2316658Certificate of AnalysisMar 20, 2023 C109038
C2316659Certificate of AnalysisMar 20, 2023 C109038
Chemical and Physical Properties
SolubilitySoluble in Methanol
SensitivityAir & Light Sensitive
Melt Point(°C)117-120°C
Molecular Weight178.610 g/mol
XLogP33.900
Hydrogen Bond Donor Count1
Hydrogen Bond Acceptor Count1
Rotatable Bond Count0
Exact Mass178.019 Da
Monoisotopic Mass178.019 Da
Topological Polar Surface Area20.200 Ų
Heavy Atom Count12
Formal Charge0
Complexity160.000
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. Xiaoran Tan, Jiaxin Liang, Haihan Yu, Yuanyuan Chen, Li Shan, Shenguang Ge, Lina Zhang, Li Li, Jinghua Yu.  (2023)  Magnetic field enabled spin-state reconfiguration for highly sensitive paper-based photoelectrochemical bioanalysis.  CHEMICAL ENGINEERING JOURNAL,      [PMID:] [10.1016/j.cej.2023.144626]
2. Jia Ding, Fei Liu, Chunling Qi, Yunlei Zhou, Huanshun Yin, Shiyun Ai.  (2021)  Enhanced photoactivity of perovskite Bi4NbO8Cl/PTC-NH2 heterojunction and its application for photoelectrochemical sensing of DNA hydroxymethylation.  SENSORS AND ACTUATORS B-CHEMICAL,      [PMID:] [10.1016/j.snb.2021.130211]
3. Saibo Chen, Hao Nan, Xuan Zhang, Yuting Yan, Zhou Zhou, Ying Zhang, Kun Wang.  (2017)  One-step hydrothermal treatment to fabricate Bi2WO6-reduced graphene oxide nanocomposites for enhanced visible light photoelectrochemical performance.  Journal of Materials Chemistry B,  (20): (3718-3727).  [PMID:32264060] [10.1039/C6TB02493A]
4. Su Yuan, Zhang Ziyu, Zhang Hongfang.  (2025)  A dual-mode biosensor for microRNA detection based on DNA tetrahedron-gated nanochannels.  MICROCHIMICA ACTA,  192  (2): (1-9).  [PMID:39827251] [10.1007/s00604-025-06950-3]
5. Xianchen Hu, Yali Xu, Yuexi Lin, Xinghe Chen, Junshan Lin.  (2025)  Tyramine–enzyme conjugate repeats for an interdigitated capacitance immunosensing array in the detection of neuroblastoma biomarker neuron-specific enolase.  ANALYST,  150  (5): (914-921).  [PMID:39881580] [10.1039/D4AN01442A]
6. Yidong Zhou, Zhijian Ke, Hangting Ye, Mengting Hong, Yifei Xu, Mingliang Zhang, Wankui Jiang, Qing Hong.  (2020)  Hydrolase CehA and a Novel Two-Component 1-Naphthol Hydroxylase CehC1C2 are Responsible for the Two Initial Steps of Carbaryl Degradation in Rhizobium sp. X9.  JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY,      [PMID:33264024] [10.1021/acs.jafc.0c03845]
7. Xiaoyu Yang, Youlin Tang, Runzi Zhang, Yao Liu, Mengjun Wang, Juan Zhang, Yi He.  (2025)  A novel SERS aptasensor based on Au-Mn-Cu nanozyme induced catalytic precipitation reactions combining with catalytic hairpin assembly strategy for sensitive detection of chloramphenicol.  JOURNAL OF FOOD COMPOSITION AND ANALYSIS,      [PMID:] [10.1016/j.jfca.2025.108402]
8. Lihui Zhao, Can Jin, He Liu, Zhaozhe Yang, Yupeng Liu.  (2026)  Natural bamboo-derived porous carbon activates PMS for BPA degradation: A singlet oxygen-dominated nonradical pathway.  Journal of Environmental Sciences,      [PMID:] [10.1016/j.jes.2026.01.022]
9. Qinyan Chen, Qiong Lin, Yibin Zeng, Haining Li, Xiao Han, Dianping Tang, Gaoda Ju.  (2026)  Pencil-drawn paper-based portable photoelectrochemical immunoassay of carbohydrate antigen 19-9 based on TiO2 hollow cube homogeneous junctions.  ANALYTICA CHIMICA ACTA,      [PMID:41813360] [10.1016/j.aca.2026.345288]
10. Xie Zhoujian, Wu Jiawen, Huang Kejing, Tan Xuecai.  (2026)  Strand displacement–triggered biocatalytic precipitation on ZIF-8/Bi2S3 photoelectrode: an aptasensing platform for sub-nanomolar kanamycin determination.  ANALYTICAL AND BIOANALYTICAL CHEMISTRY,      [PMID:] [10.1007/s00216-026-06418-0]
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