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3321-92-4 Usage


Preparation by Fries rearrangement of 2,4-dichlorophenyl acetate with aluminium chloride in tetrachloroethane at 150–160° and without solvent between 115° and 170° (43–75%).

Check Digit Verification of cas no

The CAS Registry Mumber 3321-92-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,3,2 and 1 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 3321-92:
64 % 10 = 4
So 3321-92-4 is a valid CAS Registry Number.

3321-92-4 Well-known Company Product Price

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  • Alfa Aesar

  • (L10006)  3',5'-Dichloro-2'-hydroxyacetophenone, 99%   

  • 3321-92-4

  • 5g

  • 415.0CNY

  • Detail
  • Alfa Aesar

  • (L10006)  3',5'-Dichloro-2'-hydroxyacetophenone, 99%   

  • 3321-92-4

  • 25g

  • 1482.0CNY

  • Detail
  • Aldrich

  • (383392)  3′,5′-Dichloro-2′-hydroxyacetophenone  99%

  • 3321-92-4

  • 383392-25G

  • 2,359.89CNY

  • Detail



According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 11, 2017

Revision Date: Aug 11, 2017


1.1 GHS Product identifier

Product name 1-(3,5-dichloro-2-hydroxyphenyl)ethanone

1.2 Other means of identification

Product number -
Other names 3',5'-Dichloro-2'-hydroxyacetophenone

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:3321-92-4 SDS

3321-92-4Relevant articles and documents

Bioactivity study of thiophene and pyrazole containing heterocycles

Athare, Anil E.,Dare, Sushama B.,Kale, Nitin V.,Karale, Bhausaheb K.,Mhaske, Sadhana D.,Salve, Supriya P.,Takate, Sushama J.

, p. 891 - 899 (2021/09/08)

Chalcones 3a-f were prepared by reacting thiophene containing pyrazolyl aldehyde (2) with different 2-hydroxy acetophenones 1a-f. The compounds 3a-f were transformed into different Pyrazolines 4a-f. The formation of chromene derivatives 5a-f occurred from the cyclization of 3a-f, which were then transformed into pyrazole derivatives 6a-f. Newly synthesized compounds have promising antibacterial activity against S. typhii and S. aureus, while weak activity against B. subtilis and E. coli. Compounds 5d and 6d had significant antifungal action towards A. niger, while most of the compounds were moderately active towards T. viride. Some of the synthesized compounds showed promising α-amylase inhibitory activity at 1 mg/mL concentration.

Iridium-Catalyzed C(sp3)?H Addition of Methyl Ethers across Intramolecular Carbon–Carbon Double Bonds Giving 2,3-Dihydrobenzofurans

Ohmura, Toshimichi,Kusaka, Satoshi,Torigoe, Takeru,Suginome, Michinori

, p. 4448 - 4453 (2019/09/16)

Intramolecular addition of an O-methyl C(sp3)?H bond across a carbon-carbon double bond occurs in the iridium-catalyzed reaction of methyl 2-(propen-2-yl)phenyl ethers. The Ir/(S)-DTBM-SEGPHOS catalyst promotes the reaction efficiently in toluene at 110–135 °C to afford 3,3-dimethyl-2,3-dihydrobenzofurans. Enantioselective C(sp3)?H addition is achieved in the reaction of methyl 2-(1-siloxyethenyl)phenyl ethers, affording enantioenriched 3-hydroxy-2,3-dihydrobenzofuran derivatives with up to 96% ee. (Figure presented.).

One-pot two-step synthesis of 3-iodo-4-aryloxy coumarins and their Pd/C-catalyzed annulation to coumestans

Panda, Niranjan,Mattan, Irshad

, p. 7716 - 7725 (2018/03/01)

An efficient protocol for the synthesis of various coumestans from the intramolecular annulation of 3-iodo-4-aryloxy coumarins through C-H activation has been developed. When 3-iodo-4-aryloxy coumarins were treated with 10% Pd/C (0.3 mol% Pd) in the presence of sodium acetate, the corresponding coumestans were produced in good to excellent yield. Reusability of the palladium catalyst was investigated in up to three consecutive cycles and it was found that the yield of the reaction was almost unaltered. Sequential iodination and O-arylation of 4-hydroxy coumarins leading to the 3-iodo-4-aryloxy coumarins were also achieved in a one-pot two-step process starting from aryl iodides in high yield. Pivalic acid was revealed to be the most effective additive for the later method to produce 3-iodo-4-phenoxy coumarins. Different functional groups bearing electron-donating as well as withdrawing groups are also tolerant to the reaction conditions.

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