How should Methyl 4-methylazulene-1-carboxylate be identified and specified?

Match CAS 1461-80-9 to the ester at the azulene 1-position and the methyl substituent at the 4-position. Because public physical-property data are limited, define HPLC assay, positional isomers, unesterified acid, residual solvents, water, color and spectroscopic identity instead of relying on predicted properties.

Methyl 4-methylazulene-1-carboxylate CAS 1461-80-9

Methyl 4-methylazulene-1-carboxylate, CAS 1461-80-9, is a defined azulene ester with formula C₁₃H₁₂O₂ and molecular weight 200.24 g/mol. Because public physical-property data are limited, purchasing should focus on defensible identity and lot analysis rather than predicted boiling, storage or biological claims. Buyers should specify HPLC assay, positional isomers, unesterified acid, residual solvents, water, color and spectroscopic confirmation.

CAS: 1461-80-9
Synonyms: Methyl 4-methylazulene-1-carboxylate, 4-Methylazulene-1-carboxylic acid methyl ester
Molecular Formula: C₁₃H₁₂O₂
Grade: Confirm identity by an appropriate analytical method, assay basis, related substances, residual solvents and storage requirements against the current COA; buyer qualification is required.
Package: State required quantity and destination; confirm the current container, light or moisture protection, net weight, storage conditions and transport requirements against the current COA and SDS.

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Product Description

1 Identity and specification

2 Quality controls for purchasing

3 Applications and grade selection

4 Storage and handling

5 Documentation and quotation details

Identity and specification

Item	Verified purchasing information
Product	Methyl 4-methylazulene-1-carboxylate
CAS	1461-80-9
Formula / molecular weight	C₁₃H₁₂O₂ / 200.24 g/mol
Critical selection point	Azulene substitution pattern and ester identity

Methyl 4-methylazulene-1-carboxylate has a methyl substituent at position 4 and a methyl carboxylate at position 1 of the azulene framework. Positional identity should be confirmed by appropriate chromatography and spectroscopy.

Quality controls for purchasing

Request HPLC or GC assay with limits for positional isomers and unknown related substances.
Control unesterified carboxylic acid, hydrolysis products, residual solvents and water.
Confirm color, appearance and spectral identity against an approved reference or method.

Applications and grade selection

This azulene ester may be evaluated as a research compound or fine-chemical building block in controlled synthesis and materials studies. Suitability, optical behavior and downstream performance require experimental verification; broad biological or semiconductor claims should not be assumed.

Storage and handling

Use a dry, tightly sealed, light-protective package under the supplier-documented temperature. Avoid strong oxidizers, acids, bases and prolonged light exposure. Retest conditions should be based on actual stability data rather than unsupported predictions.

Documentation and quotation details

Provide the exact name and CAS, assay and impurity limits, water and solvent requirements, quantity, packaging, destination and schedule. Request COA, SDS, spectra and a sample when positional identity or color is critical.

FAQ - Technical & Supply Chain

Q:
How should Methyl 4-methylazulene-1-carboxylate be identified and specified?

A: Match CAS 1461-80-9 to the ester at the azulene 1-position and the methyl substituent at the 4-position. Because public physical-property data are limited, define HPLC assay, positional isomers, unesterified acid, residual solvents, water, color and spectroscopic identity instead of relying on predicted properties.

Ordering & Documentation

Key information for document requests, quotations, and supply planning.

Documents

COA, TDS, SDS/MSDS and packing details are available on request.

Quotation

Send the CAS number, grade, quantity, packing preference and destination.

Sample & Supply

Support is available for samples, trial orders, bulk and repeat supply.

Storage & Shipping

Product-specific conditions are confirmed before order.

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