4-Ethoxy-1H-[1,2,3]triazolo[4,5-d]pyridazin-7-ol CAS 28689-74-9

Purity 97%+In StockPharmaceutical Standards
CAS No.28689-74-9
Molecular FormulaC6H7N5O2
Molecular Weight181.15 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4-Ethoxy-1H-[1,2,3]triazolo[4,5-d]pyridazin-7-ol CAS 28689-74-9 chemical structure

Description

The occurrence of 4-Ethoxy-1H-[1,2,3]triazolo[4,5-d]pyridazin-7-ol is closely related to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies 4-Ethoxy-1H-[1,2,3]triazolo[4,5-d]pyridazin-7-ol (CAS 28689-74-9), a certified reference material (molecular formula C6H7N5O2, MW 181.15 g/mol) for analytical method development and quality control.

The molecular framework of 4-Ethoxy-1H-[1,2,3]triazolo[4,5-d]pyridazin-7-ol (C6H7N5O2) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

As a certified reference material (CRM), 4-Ethoxy-1H-[1,2,3]triazolo[4,5-d]pyridazin-7-ol meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC6H7N5O2
Molecular Weight181.15 g/mol
AppearanceOff-white to pale yellow crystalline powder. (faint amine-like odor)
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1965
Nitrogen Atoms5

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