4-CHLORO-1-NAPHTHOL

4-CHLORO-1-NAPHTHOL
  • CAS No.:604-44-4

Important Notice

  1. This product is a chemical product/pharmaceutical intermediate. It is not a drug, an active pharmaceutical ingredient (API), or a pharmaceutical-grade material. It has not been granted a drug approval number or a Chemical Drug Substance Approval Notice, has not passed drug-related review and approval, and is not manufactured, tested, or released in accordance with pharmaceutical GMP.
  2. This product is intended solely for non-clinical research, process development, quality studies, further chemical processing, or chemical synthesis. It must not be used in drug-product manufacturing, clinical trials, clinical diagnosis, or administration to humans or animals, or be sold, used as an input, submitted for regulatory filing, or released as an API or pharmaceutical material.
  3. The purchaser must not use this product, or supply it to another party, for personal consumption, sports or fitness, weight loss, health supplements, food, or animal feed.
Other grades of this product :
4-CHLORO-1-NAPHTHOL Chemical Properties
Melting point 118-121 °C(lit.)
Boiling point 254.41°C (rough estimate)
density 密度
refractive index 1.4575 (estimate)
Fp 73 °C
storage temp. -20°C
solubility methanol: 50 mg/mL, clear, colorless to very faintly yellow
form tablets (~32 mg each)
pka9.11±0.40(Predicted)
color Off-white to gray to light brown
BRN 509750
CAS DataBase Reference604-44-4(CAS DataBase Reference)
EPA Substance Registry System1-Naphthalenol, 4-chloro- (604-44-4)
Safety Information
Hazard Codes Xi,T
Risk Statements 36/37/38-39/23/24/25-20/21/22
Safety Statements 26-36-45-36/37
RIDADR UN 2810 6.1/PG 3
WGK Germany 3
F 8-9-23
TSCA Yes
HS Code 29081990
MSDS Information
ProviderLanguage
ACROS English
SigmaAldrich English
ALFA English
4-CHLORO-1-NAPHTHOL Usage And Synthesis
Chemical PropertiesOff white to tan crystals
Uses4-Chloro-1-naphthol has been used to visualize protein bands in western blotting. It has also been used in staining polyvinylidene fluoride (PVDF) membrane by Nakane method.
UsesSuitable for visualizing protein-peroxidase conjugates in western blotting.
Synthesis Reference(s)Tetrahedron, 38, p. 2347, 1982 DOI: 10.1016/0040-4020(82)87012-9
General Description4-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.
Biochem/physiol Actions4-Chloro-1-naphthol serves as a substrate for horseradish peroxidase.
Purification MethodsCrystallise the naphthol from EtOH or CHCl3. [Beilstein 6 H 611, 6 II 582, 6 III 2933, 6 IV 4233.]

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