6-Ethynylpyrazolo[1,5-a]pyrimidine CAS 1388805-28-4

Purity 97%+In StockPharmaceutical Standards
CAS No.1388805-28-4
Molecular FormulaC8H5N3
Molecular Weight143.15 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

6-Ethynylpyrazolo[1,5-a]pyrimidine CAS 1388805-28-4 chemical structure

Description

Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, 6-Ethynylpyrazolo[1,5-a]pyrimidine is typically pale yellow to yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 143.15 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).

6-Ethynylpyrazolo[1,5-a]pyrimidine (CAS 1388805-28-4), molecular formula C8H5N3 and molecular weight 143.15 g/mol, is a CATO reference standard with documented purity and traceability.

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), 6-Ethynylpyrazolo[1,5-a]pyrimidine 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 FormulaC8H5N3
Molecular Weight143.15 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)8.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1991
Nitrogen Atoms3

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