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HONGKUN / PRODUCT DIRECTORY

Methyl 2-cyanoisonicotinate | CAS 94413-64-6

A pyridine building block pairing a C2 nitrile with a C4 methyl ester, used in published topiroxostat routes through hydrazide formation and triazole construction. Both functional groups and their positions define the required starting stage.

CAS94413-64-6
Molecular formulaC8H6N2O2
Molecular weight162.15 g/mol

Product overview

The methyl ester and nitrile occupy different positions and perform different tasks in this molecule. The C4 ester supplies the acyl functionality for conversion to a hydrazide, while the C2 cyano group remains a defining feature of the pyridine fragment in topiroxostat-related chemistry. This makes methyl 2-cyanoisonicotinate distinct from a cyanonicotinate with another substitution pattern or from the corresponding free acid. Incoming-material review should confirm the methyl ester, retained nitrile and complete ring connectivity. Chromatographic qualification can then focus on relevant acid, amide or other converted forms identified by the selected source and downstream route, with water and residual-solvent limits agreed as needed.

Chemical identity

Chemical name
Methyl 2-cyanoisonicotinate
CAS number
94413-64-6
Molecular formula
C8H6N2O2
Molecular weight
162.15 g/mol

Application context

Published topiroxostat processes convert methyl 2-cyanoisonicotinate to the corresponding hydrazide and combine that intermediate with a second pyridyl component to construct the triazole framework. The methyl ester is therefore purchased at a specific upstream stage of the route.

For qualification, state whether hydrazide preparation is the intended next operation. Confirm that the material is the methyl ester with its C2 nitrile intact, and define the related forms that must be resolved. Assay basis, water and relevant residual solvents should be reviewed against the buyer’s conversion and isolation programme.

Chemistry and synthetic role

The ester carbonyl at pyridine C4 is an acyl-transfer site. The C2 nitrile is a separate function, so converting the ester does not itself imply a change to the cyano group.

Quality review

Verify the 2,4 substitution pattern

Confirm nitrile at C2 and methyl carboxylate at C4.

Identify the ester stage

Distinguish the free acid, another ester or the hydrazide intermediate.

Review functional-group conversions

Include relevant acid or amide forms in the chromatographic specification where the route requires them.

Preparing a specification

Specify methyl 2-cyanoisonicotinate CAS 94413-64-6, intact nitrile, methyl ester identity and assay method. Add route-relevant converted forms, water and solvents for hydrazide preparation.

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

Why is it called an isonicotinate?

The carboxylate substituent is at pyridine C4.

What does the methyl ester do in topiroxostat routes?

It is converted to a hydrazide used in subsequent triazole construction.

Can the hydrazide be ordered under this CAS?

No. The hydrazide is a different intermediate and requires its own identity and specification.

Technical sources
  1. Methyl 2-cyanopyridine-4-carboxylateCymit / Apollo Scientific
  2. Methyl 2-cyanoisonicotinate SDSFluorochem
  3. Method for synthesizing topiroxostat by one-pot methodCN106045979A
  4. Method for producing pyridyl triazole carbonitrile and intermediate thereofUS20150166510A1