3-(5-(Thiophen-3-yl)-1,10b-dihydro-5H-benzo[e]pyrazolo[1,5-c][1,3]oxazin-2-yl)phenol CAS 899984-78-2

Purity 97%+In StockPharmaceutical Standards
CAS No.899984-78-2
Molecular FormulaC20H16N2O2S
Molecular Weight348.42 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-(5-(Thiophen-3-yl)-1,10b-dihydro-5H-benzo[e]pyrazolo[1,5-c][1,3]oxazin-2-yl)phenol CAS 899984-78-2 chemical structure

Description

The occurrence of 3-(5-(Thiophen-3-yl)-1,10b-dihydro-5H-benzo[e]pyrazolo[1,5-c][1,3]oxazin-2-yl)phenol is closely related to a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

3-(5-(Thiophen-3-yl)-1,10b-dihydro-5H-benzo[e]pyrazolo[1,5-c][1,3]oxazin-2-yl)phenol (CAS 899984-78-2) is a high-purity analytical reference standard with the molecular formula C20H16N2O2S and a molecular weight of 348.42 g/mol.

Structurally, 3-(5-(Thiophen-3-yl)-1,10b-dihydro-5H-benzo[e]pyrazolo[1,5-c][1,3]oxazin-2-yl)phenol (C20H16N2O2S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 14.0, corresponding to approximately 14 ring(s) or double-bond equivalent(s). With a molecular weight of 348.42 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.

As a certified reference material (CRM), 3-(5-(Thiophen-3-yl)-1,10b-dihydro-5H-benzo[e]pyrazolo[1,5-c][1,3]oxazin-2-yl)phenol 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 FormulaC20H16N2O2S
Molecular Weight348.42 g/mol
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)14.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1987
Nitrogen Atoms2
Sulfur Atoms1

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