33755-53-2 Biotinyl-4-nitrophenyl ester 1H-Thieno(3,4-d)imidazole-4-pentanoic acid, hexahydro-2-oxo-, 4-nitrophenyl ester, (3aS-(3aalpha,4beta,6aalpha))- 1H-Thieno(3,4-d)imidazole-4-pentanoic acid, hexahydro-2-oxo-, 4-nitrophenyl ester, (3aS,4S,6aR)- Biotin-p-nitrophenyl ester CAS 33755-53-2

Purity 97%+In StockPharmaceutical Standards
CAS No.33755-53-2
Molecular FormulaC16H25N3O5S
Molecular Weight371.45 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

33755-53-2 Biotinyl-4-nitrophenyl ester 1H-Thieno(3,4-d)imidazole-4-pentanoic acid, hexahydro-2-oxo-, 4-nitrophenyl ester, (3aS-(3aalpha,4beta,6aalpha))- 1H-Thieno(3,4-d)imidazole-4-pentanoic acid, hexahydro-2-oxo-, 4-nitrophenyl ester, (3aS,4S,6aR)- Biotin-p-nitrophenyl ester CAS 33755-53-2 chemical structure

Description

CATO supplies 33755-53-2 Biotinyl-4-nitrophenyl ester 1H-Thieno(3,4-d)imidazole-4-pentanoic acid, hexahydro-2-oxo-, 4-nitrophenyl ester, (3aS-(3aalpha,4beta,6aalpha))- 1H-Thieno(3,4-d)imidazole-4-pentanoic acid, hexahydro-2-oxo-, 4-nitrophenyl ester, (3aS,4S,6aR)- Biotin-p-nitrophenyl ester (CAS 33755-53-2), a certified reference material (molecular formula C16H25N3O5S, MW 371.45 g/mol) for analytical method development and quality control.

Based on its molecular formula C16H25N3O5S, 33755-53-2 Biotinyl-4-nitrophenyl ester 1H-Thieno(3,4-d)imidazole-4-pentanoic acid, hexahydro-2-oxo-, 4-nitrophenyl ester, (3aS-(3aalpha,4beta,6aalpha))- 1H-Thieno(3,4-d)imidazole-4-pentanoic acid, hexahydro-2-oxo-, 4-nitrophenyl ester, (3aS,4S,6aR)- Biotin-p-nitrophenyl ester contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 371.45 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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 FormulaC16H25N3O5S
Molecular Weight371.45 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)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1966
Nitrogen Atoms3
Sulfur Atoms1

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