Skip to product details

Chemical product profile

HONGKUN / PRODUCT DIRECTORY

5-(Methoxymethyl)pyridine-2,3-dicarboxylic acid | CAS 143382-03-0

A methoxymethyl-substituted pyridine diacid documented in imazamox-related chemistry, where distinguishing the free diacid from its ester and anhydride derivatives is central to route matching and material qualification.

CAS143382-03-0
Molecular formulaC9H9NO5
Molecular weight211.17 g/mol

Product overview

This pyridine diacid combines adjacent carboxyl groups at C2 and C3 with a methoxymethyl side chain at C5. The free diacid appears in published imazamox-related synthesis and in environmental analysis of related substances. Its CH2OCH3 linkage distinguishes it from a ring-bound methoxy analogue. For synthesis, identify the required free-acid form and quantify the material on the agreed water and solvent basis. For quantitative analytical use, specify assigned content, uncertainty and traceability. The monoesters and cyclic anhydride require separate structural and purchasing specifications.

Chemical identity

Chemical name
5-(Methoxymethyl)pyridine-2,3-dicarboxylic acid
CAS number
143382-03-0
Molecular formula
C9H9NO5
Molecular weight
211.17 g/mol

Application context

The free diacid occurs in published imazamox-related pyridinedicarboxylic-acid chemistry and in environmental analysis of imazamox-related substances. For synthesis, specify whether the receiving step requires this diacid, a monoester or an anhydride. For quantitative analysis, request an assigned content value, uncertainty and traceability appropriate to the method. Distinguish the intended analytical use from routine process-feedstock qualification when defining the required batch evidence.

Chemistry and synthetic role

The pyridine nitrogen, adjacent 2,3-carboxyl groups and 5-CH2OCH3 substituent are separate identity features. Methoxymethyl and ring-bound methoxy are not equivalent; neither are a diacid and its dehydrated anhydride.

Quality review

Confirm the two acid functions

Use identity evidence that distinguishes the free diacid from monoesters or anhydride derivatives; acid-form mismatch changes the material entering the route.

Check the C5 side chain

Confirm CH2OCH3 connectivity, rather than a ring methoxy or chloromethyl analogue, using an appropriate structural method.

Choose a quantitative content basis

Agree assay reporting and any water or residual-solvent correction; HPLC area alone does not assign diacid content.

Preparing a specification

State the free-diacid identity, CAS, intended synthetic or analytical use, quantitative assay basis and limits for related ester or side-chain analogues relevant to the receiving process. Request water data if needed for charge calculation.

Packaging and storage

Confirm packaging format, net weight and transport arrangements for the selected grade, order quantity and destination. Request the applicable SDS and label to establish storage and handling conditions.

Documentation

Request the proposed specification, batch COA and current SDS. Confirm availability of the identity data and analytical methods relevant to the checks above; documents depend on the selected manufacturer and grade.

Procurement questions

Is this the imazamox active ingredient?

No. It is a distinct pyridine diacid documented in imazamox-related chemistry.

Can an anhydride be supplied under this enquiry?

Only under a separately defined identity and specification; it is not the same chemical form.

What is required for quantitative analytical use?

Request assigned content, measurement uncertainty and traceability appropriate to the analytical method.

Technical sources
  1. PubChem CID 10998311 — identity property recordNCBI / PubChem
  2. 5-(Methoxymethyl)pyridine-2,3-dicarboxylic acidEnamine via Sigma-Aldrich
  3. EP2358678B1 — Process for manufacturing 5-chloromethyl-2,3-pyridine dicarboxylic acid anhydridesEuropean Patent Office / BASF
  4. Campagne exceptionnelle — BRGM/RP-59135-FRBRGM