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25974-26-9 Usage

General Description

Pyridazine, 3,6-dichloro-, 2-oxide is a chemical compound with the molecular formula C4H2Cl2N2O. It is an organic compound belonging to the pyridazine family, which contains a six-membered ring with two nitrogen atoms at positions 1 and 2. The 3,6-dichloro substitution indicates that there are chlorine atoms attached at the 3 and 6 positions on the ring. The addition of the 2-oxide group signifies that there is an oxygen atom attached at the 2 position on the ring. This chemical is commonly used in the pharmaceutical industry, as well as in the synthesis of various organic compounds. It has potential applications as an intermediate in the production of agrochemicals, pharmaceuticals, and other specialty chemicals due to its unique structural properties.

Check Digit Verification of cas no

The CAS Registry Mumber 25974-26-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,5,9,7 and 4 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 25974-26:
139 % 10 = 9
So 25974-26-9 is a valid CAS Registry Number.



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

Version: 1.0

Creation Date: Aug 15, 2017

Revision Date: Aug 15, 2017


1.1 GHS Product identifier

Product name 3,6-dichloro-1-oxidopyridazin-1-ium

1.2 Other means of identification

Product number -
Other names 3.6-Dichlor-pyridazin-1-oxid

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:25974-26-9 SDS

25974-26-9Upstream product

25974-26-9Relevant articles and documents

Synthesis of N,N-Dioxopyridazines

Rozen, Shlomo,Shaffer, Avshalom

supporting information, p. 4707 - 4709 (2017/09/23)

Despite many efforts, one of the smallest heterocycles containing two nitrogen atoms, pyridazine, could not be converted to its N,N-dioxide (see, however, Nakadate et al. Chem. Pharm. Bull. 1970, 18, 1211-1218). HOF·CH3CN, made easily from diluted fluorine, was able to accomplish this task in a fast reaction with good yields.



Page/Page column 7, (2010/11/29)

A process for preparing 3,6-dichloropyridazine-1-oxide which comprises reacting 3,6-dichloropyridazine with an acid anhydride and hydrogen peroxide of a concentration of 60% or less or a urea hydrogen peroxide addition compound.

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