151271-53-3 UK 1 (2,4'-Bibenzoxazole)-4-carboxylic acid, 2'-(2-hydroxyphenyl)-, methyl ester Methyl 2'-(2-hydroxyphenyl)-(2,4'-bibenzoxazole)-4-carboxylate UK-1 CAS 151271-53-3

Purity 97%+In StockPharmaceutical Standards
CAS No.151271-53-3
Molecular FormulaC22H14N2O5
Molecular Weight386.36 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

151271-53-3 UK 1 (2,4'-Bibenzoxazole)-4-carboxylic acid, 2'-(2-hydroxyphenyl)-, methyl ester Methyl 2'-(2-hydroxyphenyl)-(2,4'-bibenzoxazole)-4-carboxylate UK-1 CAS 151271-53-3 chemical structure

Description

The occurrence of 151271-53-3 UK 1 (2,4'-Bibenzoxazole)-4-carboxylic acid, 2'-(2-hydroxyphenyl)-, methyl ester Methyl 2'-(2-hydroxyphenyl)-(2,4'-bibenzoxazole)-4-carboxylate UK-1 is closely related to a flavonoid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies 151271-53-3 UK 1 (2,4'-Bibenzoxazole)-4-carboxylic acid, 2'-(2-hydroxyphenyl)-, methyl ester Methyl 2'-(2-hydroxyphenyl)-(2,4'-bibenzoxazole)-4-carboxylate UK-1 (CAS 151271-53-3), a certified reference material (molecular formula C22H14N2O5, MW 386.36 g/mol) for analytical method development and quality control.

Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, 151271-53-3 UK 1 (2,4'-Bibenzoxazole)-4-carboxylic acid, 2'-(2-hydroxyphenyl)-, methyl ester Methyl 2'-(2-hydroxyphenyl)-(2,4'-bibenzoxazole)-4-carboxylate UK-1 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 386.36 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 FormulaC22H14N2O5
Molecular Weight386.36 g/mol
AppearancePale yellow to yellow crystalline powder
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)17.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2000
Nitrogen Atoms2

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