Pyrazolo[1,5-b]pyridazine-3-carboxylic Acid CAS 88561-91-5

Purity 97%+In StockPharmaceutical Standards
CAS No.88561-91-5
Molecular FormulaC7H5N3O2
Molecular Weight163.13 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Pyrazolo[1,5-b]pyridazine-3-carboxylic Acid CAS 88561-91-5 chemical structure

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Pyrazolo[1,5-b]pyridazine-3-carboxylic Acid.

Pyrazolo[1,5-b]pyridazine-3-carboxylic Acid (CAS 88561-91-5) is a high-purity analytical reference standard with the molecular formula C7H5N3O2 and a molecular weight of 163.13 g/mol.

Structurally, Pyrazolo[1,5-b]pyridazine-3-carboxylic Acid (C7H5N3O2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 163.13 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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

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 FormulaC7H5N3O2
Molecular Weight163.13 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)7.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1982
Nitrogen Atoms3

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