Methyl 2-butynoate

Methyl 2-butynoate (CAS 23326-27-4) is a C4 ester used as a semiochemical component in lures, release-rate trials and reference work.

No target species is recorded against this material in our file, so it is catalogued as a blend component and reference material. If a specification needs species named, send the target and we will confirm whether this isomer is the right starting point.

Where it is used

This material sits in the working part of the catalogue: the compounds formulation teams ask for by CAS when a blend needs a specific isomer, a reference point for a chromatogram, or a small quantity to test before committing to a drum.

Isomer, stability and handling

Esters in this list are judged mainly on isomeric purity. The minor isomer is a different semiochemical and can suppress rather than support attraction, which is why isomer figures belong in the specification.

Store cool, dry and dark: sealed under nitrogen or argon at −20 °C for holdings longer than one season, and let containers reach room temperature before opening so condensation does not enter the material. Weigh and formulate in a ventilated area; the safety data sheet gives handling detail for the neat substance.

Documentation and packing

Each delivery carries a certificate of analysis, a GC trace and an SDS. Where a tender asks for method detail, the chromatographic conditions are supplied separately on request.

Standard packing for this line is 1kg / 25kg / 100kg, with smaller development quantities available so a blend can be trialled before a bulk order. Lead time is confirmed at quotation.

Specification

Product name	Methyl 2-butynoate
CAS number	23326-27-4
Molecular formula	C5H6O2
Molecular weight	98.10 g/mol
Chemical class	Ester
Function	Semiochemical component
Assay and isomeric purity	Stated per lot on the certificate of analysis
Standard packing	1kg / 25kg / 100kg
Development quantity	Available on request, below standard pack
Lead time	Confirmed at quotation
Catalogue reference	S3-23326-27-4

Targets

No species record is held against this material in our file. It is supplied as a blend component, an isomer for formulation work, or a reference standard. Tell us the species and we will say whether this is the right starting point.