(S)-4-((2S,3S)-2-Amino-3-methylpentanamido)-5-((2S,3R)-2-(((benzyloxy)carbonyl)((S)-1-carboxy-4-fluoro-3-oxobutan-2-yl)amino)-3-hydroxybutanamido)-5-oxopentanoic acid CAS 220760-26-9

Purity 97%+In StockPharmaceutical Standards
CAS No.220760-26-9
Molecular FormulaC28H39FN4O11
Molecular Weight626.63 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(S)-4-((2S,3S)-2-Amino-3-methylpentanamido)-5-((2S,3R)-2-(((benzyloxy)carbonyl)((S)-1-carboxy-4-fluoro-3-oxobutan-2-yl)amino)-3-hydroxybutanamido)-5-oxopentanoic acid CAS 220760-26-9 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 626.63 g/mol gives (S)-4-((2S,3S)-2-Amino-3-methylpentanamido)-5-((2S,3R)-2-(((benzyloxy)carbonyl)((S)-1-carboxy-4-fluoro-3-oxobutan-2-yl)amino)-3-hydroxybutanamido)-5-oxopentanoic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

(S)-4-((2S,3S)-2-Amino-3-methylpentanamido)-5-((2S,3R)-2-(((benzyloxy)carbonyl)((S)-1-carboxy-4-fluoro-3-oxobutan-2-yl)amino)-3-hydroxybutanamido)-5-oxopentanoic acid (CAS 220760-26-9), molecular formula C28H39FN4O11 and molecular weight 626.63 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, (S)-4-((2S,3S)-2-Amino-3-methylpentanamido)-5-((2S,3R)-2-(((benzyloxy)carbonyl)((S)-1-carboxy-4-fluoro-3-oxobutan-2-yl)amino)-3-hydroxybutanamido)-5-oxopentanoic acid (C28H39FN4O11) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 626.63 g/mol, it falls into the high-molecular-weight range. 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 FormulaC28H39FN4O11
Molecular Weight626.63 g/mol
Purity97%+
StorageStore in a cool place (≤25°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; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)11.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2020
Halogen ContentF-containing
Nitrogen Atoms4

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