3A58010674 208265-92-3 Pegfilgrastim Pegfilgrastim [USAN:INN:BAN] Colony-stimulating factor (human), 3-hydroxypropyl-N-methionyl-, 1-ether with alpha-methyl-omega-hydroxypoly(oxy-1,2-ethanediyl Neulasta PEG-filgrastim N-(3-Hydroxypropyl)methionylcolony-stimulating factor (human), 1-ether with alpha-methyl-omega-hydroxypoly(oxyethylene) UNII-3A58010674 Neupopeg HSDB 8157 CAS 208265-92-3

Purity 97%+In StockPharmaceutical Standards
CAS No.208265-92-3
Molecular FormulaC25H38O3
Molecular Weight386.57 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3A58010674 208265-92-3 Pegfilgrastim Pegfilgrastim [USAN:INN:BAN] Colony-stimulating factor (human), 3-hydroxypropyl-N-methionyl-, 1-ether with alpha-methyl-omega-hydroxypoly(oxy-1,2-ethanediyl Neulasta PEG-filgrastim N-(3-Hydroxypropyl)methionylcolony-stimulating factor (human), 1-ether with alpha-methyl-omega-hydroxypoly(oxyethylene) UNII-3A58010674 Neupopeg HSDB 8157 CAS 208265-92-3 chemical structure

Description

The occurrence of 3A58010674 208265-92-3 Pegfilgrastim Pegfilgrastim [USAN:INN:BAN] Colony-stimulating factor (human), 3-hydroxypropyl-N-methionyl-, 1-ether with alpha-methyl-omega-hydroxypoly(oxy-1,2-ethanediyl Neulasta PEG-filgrastim N-(3-Hydroxypropyl)methionylcolony-stimulating factor (human), 1-ether with alpha-methyl-omega-hydroxypoly(oxyethylene) UNII-3A58010674 Neupopeg HSDB 8157 is closely related to a steroid core, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

3A58010674 208265-92-3 Pegfilgrastim Pegfilgrastim [USAN:INN:BAN] Colony-stimulating factor (human), 3-hydroxypropyl-N-methionyl-, 1-ether with alpha-methyl-omega-hydroxypoly(oxy-1,2-ethanediyl Neulasta PEG-filgrastim N-(3-Hydroxypropyl)methionylcolony-stimulating factor (human), 1-ether with alpha-methyl-omega-hydroxypoly(oxyethylene) UNII-3A58010674 Neupopeg HSDB 8157 (CAS 208265-92-3) is a high-purity analytical reference standard with the molecular formula C25H38O3 and a molecular weight of 386.57 g/mol.

The molecular framework of 3A58010674 208265-92-3 Pegfilgrastim Pegfilgrastim [USAN:INN:BAN] Colony-stimulating factor (human), 3-hydroxypropyl-N-methionyl-, 1-ether with alpha-methyl-omega-hydroxypoly(oxy-1,2-ethanediyl Neulasta PEG-filgrastim N-(3-Hydroxypropyl)methionylcolony-stimulating factor (human), 1-ether with alpha-methyl-omega-hydroxypoly(oxyethylene) UNII-3A58010674 Neupopeg HSDB 8157 (C25H38O3) is characterized by a steroid core, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).

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 FormulaC25H38O3
Molecular Weight386.57 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)7.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2016

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