Diethyl 3-iodo-1H-pyrazole-4,5-dicarboxylate CAS 190263-21-9

Purity 97%+In StockPharmaceutical Standards
CAS No.190263-21-9
Molecular FormulaC9H11IN2O4
Molecular Weight338.10 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Diethyl 3-iodo-1H-pyrazole-4,5-dicarboxylate CAS 190263-21-9 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 338.10 g/mol gives Diethyl 3-iodo-1H-pyrazole-4,5-dicarboxylate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies Diethyl 3-iodo-1H-pyrazole-4,5-dicarboxylate (CAS 190263-21-9), a certified reference material (molecular formula C9H11IN2O4, MW 338.10 g/mol) for analytical method development and quality control.

Structurally, Diethyl 3-iodo-1H-pyrazole-4,5-dicarboxylate (C9H11IN2O4) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, iodine substitution. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 338.10 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC9H11IN2O4
Molecular Weight338.10 g/mol
AppearanceOff-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor)
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2011
Halogen ContentI-containing
Nitrogen Atoms2

Related Diethyl Standards

Recommended Standards

Why CATO?