756525-99-2 N-[15-[(2,5-Dioxo-1-pyrrolidinyl)oxy]-15-oxo-3,6,9,12-tetraoxapentadec-1-yl]-2,5-dihydro-2,5-dioxo-1H-pyrrole-1-propanamide O-[N-(3-Maleimidopropionyl)aminoethyl]-O inverted exclamation marka-[3-(N-succinimidyloxy)-3-oxopropyl]triethylene glycol monodisperse Mal-PEG4-NHS-ester CAS 756525-99-2
| CAS No. | 756525-99-2 |
| Molecular Formula | C22H31N3O11 |
| Molecular Weight | 513.50 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 756525-99-2 N-[15-[(2,5-Dioxo-1-pyrrolidinyl)oxy]-15-oxo-3,6,9,12-tetraoxapentadec-1-yl]-2,5-dihydro-2,5-dioxo-1H-pyrrole-1-propanamide O-[N-(3-Maleimidopropionyl)aminoethyl]-O inverted exclamation marka-[3-(N-succinimidyloxy)-3-oxopropyl]triethylene glycol monodisperse Mal-PEG4-NHS-ester 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.
CATO supplies 756525-99-2 N-[15-[(2,5-Dioxo-1-pyrrolidinyl)oxy]-15-oxo-3,6,9,12-tetraoxapentadec-1-yl]-2,5-dihydro-2,5-dioxo-1H-pyrrole-1-propanamide O-[N-(3-Maleimidopropionyl)aminoethyl]-O inverted exclamation marka-[3-(N-succinimidyloxy)-3-oxopropyl]triethylene glycol monodisperse Mal-PEG4-NHS-ester (CAS 756525-99-2), a certified reference material (molecular formula C22H31N3O11, MW 513.50 g/mol) for analytical method development and quality control.
The molecular framework of 756525-99-2 N-[15-[(2,5-Dioxo-1-pyrrolidinyl)oxy]-15-oxo-3,6,9,12-tetraoxapentadec-1-yl]-2,5-dihydro-2,5-dioxo-1H-pyrrole-1-propanamide O-[N-(3-Maleimidopropionyl)aminoethyl]-O inverted exclamation marka-[3-(N-succinimidyloxy)-3-oxopropyl]triethylene glycol monodisperse Mal-PEG4-NHS-ester (C22H31N3O11) is characterized by a flavonoid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
Physical & Chemical Properties
| Molecular Formula | C22H31N3O11 |
| Molecular Weight | 513.50 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Nitrogen Atoms | 3 |
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