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HONGKUN / PRODUCT DIRECTORY

2-Chloro-3-cyanopyridine | CAS 6602-54-6

A chloronicotinonitrile building block combining an aromatic substitution site with a nitrile handle, associated with mirtazapine and nevirapine intermediate chemistry. Qualification must distinguish the nitrile from corresponding amide and acid forms.

CAS6602-54-6
Molecular formulaC6H3ClN2

Product overview

Chlorine at C2 and a nitrile at C3 give this pyridine a different synthetic role from 2-chloronicotinic acid. The ring chloride provides a site for introducing another fragment, while the nitrile offers a separate carbon-containing functional handle. This dual functionality is relevant to intermediate work associated with mirtazapine and nevirapine. Purchasing should identify the nitrile stage explicitly rather than relying on the shortened term chloronicotinic intermediate. Structural confirmation and a chromatographic method should cover the required positional identity and any relevant related pyridines. When water or residual solvents affect the buyer’s next step, their limits should be agreed separately from the main-component purity result.

Chemical identity

Chemical name
2-Chloro-3-cyanopyridine
CAS number
6602-54-6
Molecular formula
C6H3ClN2

Application context

Manufacturer technical literature identifies 2-chloro-3-cyanopyridine in the intermediate context of mirtazapine and nevirapine. The compound supplies a pyridine skeleton with adjacent chloride and nitrile functions for subsequent route-specific transformations.

The buyer’s selected sequence determines whether aromatic substitution or nitrile transformation is the immediate qualification concern. Match the sample to that reaction and identify related amide, acid or other pyridine components requiring analytical control. A clear statement of the intended route stage helps distinguish this reagent from chloronicotinic acid, chloronicotinamide or a substituted downstream intermediate.

Chemistry and synthetic role

The pyridine nitrogen, C2 chloride and C3 nitrile are distinct structural features. The nitrile contains a carbon–nitrogen triple bond and is not a carboxylate or amide.

Quality review

Identify the nitrile stage

Confirm the C≡N function and the C2/C3 substitution pattern.

Resolve relevant converted forms

Include amide or acid derivatives in related-substance assessment when relevant to the manufacturing route.

Set reaction-specific water criteria

Agree water separately where the subsequent nitrile or chloride transformation requires it.

Preparing a specification

State 2-chloronicotinonitrile, CAS 6602-54-6, structural identity and chromatographic assay. Specify route-relevant amide/acid components and water or residual solvents for the next transformation.

Packaging and storage

Packaging, closure and net weight are agreed for the selected grade, order quantity and destination. Confirm storage and transport requirements against the actual supplier SDS.

Documentation

Request a batch COA, specification, identity data and SDS. Confirm the availability of the analytical methods and any application-specific impurity results with the proposed supplier.

Procurement questions

Is this the same as 2-chloronicotinic acid?

No. This material has a nitrile at C3; the acid has a carboxyl group.

Which pharmaceutical routes are associated with it?

Technical manufacturer literature lists mirtazapine and nevirapine intermediate applications.

Should amide and acid impurities be included?

Include them when the proposed process or the next reaction makes those related forms relevant.

Technical sources
  1. 2-Chloro-3-cyanopyridine C1369TCI
  2. 2-ChloronicotinonitrileVWR / Thermo Scientific
  3. 2-Chloro-3-cyanopyridineJubilant Ingrevia