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5-methyl-4-[(E)-phenyldiazenyl]-2,4-dihydro-3H-pyrazol-3-one is a complex organic compound with the molecular formula C11H11N3O. It is a derivative of pyrazolone, a heterocyclic compound with a pyrazole ring fused to a ketone. The molecule features a methyl group at the 5-position, a phenyldiazenyl group at the 4-position, and a 2,4-dihydro-3H-pyrazol-3-one core structure. 5-methyl-4-[(E)-phenyldiazenyl]-2,4-dihydro-3H-pyrazol-3-one is characterized by its red color and is often used as a dye or pigment in various applications. Its chemical properties include reactivity with reducing agents and sensitivity to light, which can lead to color changes. The compound's structure and properties make it a subject of interest in the fields of organic chemistry and materials science.

2650-07-9

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2650-07-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 2650-07-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,6,5 and 0 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 2650-07:
(6*2)+(5*6)+(4*5)+(3*0)+(2*0)+(1*7)=69
69 % 10 = 9
So 2650-07-9 is a valid CAS Registry Number.

2650-07-9SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 16, 2017

Revision Date: Aug 16, 2017

1.Identification

1.1 GHS Product identifier

Product name 3-methyl-4-phenyldiazenyl-1,4-dihydropyrazol-5-one

1.2 Other means of identification

Product number -
Other names 3-Methyl-4-benzolazo-5-pyrazolon

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

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More Details:2650-07-9 SDS

2650-07-9Relevant academic research and scientific papers

Some Transition Metal Complexes Derived from the Heterocyclic Ligands 3-Methyl-4-Arylazopyrazole-5-Ones

Shukla, P. R.,Srivastava, Chandreshwari

, p. 937 - 939 (2007/10/02)

Some planar and octahedral complexes of the sulphates of Cu(II) and Ni(II) with different 3-methyl-4-arylazo pyrazole-5-ones have been prepared.The complexes contain only one molecule of the ligand which functions as a bidentate donar coordinating through its carbonyl and azo group while the rest of the positions in the coordination geometry of metal are occupied by water molecules.The magnetic and electronic data of the complexes are discussed in the light of structures assigned.

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