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Chemical product profile

HONGKUN / PRODUCT DIRECTORY

1,3-Dimethyl-5-phenoxy-1H-pyrazole-4-carbaldehyde oxime | CAS 110035-28-4

A phenoxy-substituted pyrazole aldoxime appearing in published fenpyroximate chemistry, with a free oxime function and geometry-sensitive qualification needs that distinguish a synthesis reagent from an assigned metabolite reference standard.

CAS110035-28-4
Molecular formulaC12H13N3O2
Molecular weight231.25 g/mol

Product overview

A phenoxy substituent, two methyl groups and a free aldoxime define this pyrazole intermediate. It is used as an oxime coupling precursor in published fenpyroximate synthesis. The geometry of the oxime is an important specification variable: the order description should state whether a particular E/Z form or composition is required. The E-configured oxime is also described as metabolite M-13 in fenpyroximate metabolism work. Material selection for synthesis focuses on geometry and related substances, while quantitative metabolite analysis additionally calls for an appropriate assigned content and reference certificate.

Chemical identity

Chemical name
1,3-Dimethyl-5-phenoxy-1H-pyrazole-4-carbaldehyde oxime
CAS number
110035-28-4
Molecular formula
C12H13N3O2
Molecular weight
231.25 g/mol

Application context

In published fenpyroximate chemistry, the pyrazole oxime is combined with a chloromethylbenzoate precursor to assemble the oxime-containing portion of the target structure. Process-development work should specify the free oxime and the required geometric composition before assessing chemical purity. The E-configured structure has a separate analytical role in studies of metabolite M-13. For that use, specify the reference structure, assigned content and certificate requirements. Distinguishing these two uses at enquiry stage helps align the selected grade and analytical documentation with the receiving laboratory.

Chemistry and synthetic role

The oxime OH provides a functional site distinct from the phenoxy ether and the N-methylated pyrazole. Oxime derivatisation changes the material identity. Geometric assignment around the C=N bond must be established separately when a particular isomer is required.

Quality review

Define the required oxime geometry

Do not assume an E-only batch from the generic name. Agree the E/Z assignment method and any ratio requirement.

Distinguish free oxime from derivatised material

Require identity evidence for the unmodified aldoxime and suitable separation from route-related species; set precursor limits only where the process justifies them.

Separate reagent and reference-standard qualification

A metabolite-analysis enquiry should request assigned content and stereochemical evidence explicitly, rather than accept a synthesis-grade assay as certification.

Preparing a specification

State CAS 110035-28-4 and the full oxime name, required E/Z scope, assay method and relevant related substances. If the intended purpose is M-13 analysis, specify the target structure, value assignment and certificate requirements independently of a synthesis enquiry.

Packaging and storage

Packaging format, closure and net weight should be agreed for the selected grade, order quantity and destination. Request the actual supplier SDS and confirm its storage and transport instructions before receipt.

Documentation

Request COA, SDS, identity spectra and an agreed structural description. Confirm availability of oxime-geometry data, representative chromatograms and any reference-standard certificate needed for metabolite analysis.

Procurement questions

Is this fenpyroximate itself?

No. It is the free oxime precursor named in related synthetic literature.

How should oxime geometry be specified?

State the required E/Z form or ratio and agree a method for assignment and measurement against the target structure.

Can a synthesis batch serve automatically as M-13 standard?

No. The analytical target, geometry, assigned content and supporting certificate require separate qualification.

Technical sources
  1. PubChem CID 682832NCBI / PubChem
  2. 1,3-Dimethyl-5-phenoxy-1H-pyrazole-4-carbaldehyde oximeAmbeed
  3. Fenpyroximate JMPR evaluation 2017FAO / WHO JMPR
  4. Partner product BL3H97F471F1BLD Pharmatech via Sigma-Aldrich