| Category | Small-molecule Heterobifunctional PEG |
| Molecular Formula | C18H27NO9 |
| Molecular Weight | 401.41 |
| Appearance | Light yellow to brown clear liquid |
| Shipping | Room temperature |
| Storage | Store at 4 °C |
Propargyl-PEG5-NHS ester
Propargyl-PEG5-NHS ester is an extended PEG linker with NHS ester and terminal alkyne, designed for CuAAC-based ADC conjugation. The PEG5 chain improves solubility and reduces steric hindrance, ideal for constructing stable, high-performance antibody-drug conjugates.
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- Specification
- Application
| Synonyms | Alkyne-PEG5-NHS;Alkyne-PEG5-N-hydroxysuccinimidyl ester; 2,5-Dioxopyrrolidin-1-yl 4,7,10,13,16-pentaoxanonadec-18-yn-1-oate |
| IUPACName | (2,5-dioxopyrrolidin-1-yl) 3-[2-[2-[2-(2-prop-2-ynoxyethoxy)ethoxy]ethoxy]ethoxy]propanoate |
| CanonicalSMILES | C#CCOCCOCCOCCOCCOCCC(=O)ON1C(=O)CCC1=O |
| InChI | InChI=1S/C18H27NO9/c1-2-6-23-8-10-25-12-14-27-15-13-26-11-9-24-7-5-18(22)28-19-16(20)3-4-17(19)21/h1H,3-15H2 |
| InChIKey | ACZDUKRWTPZVRP-UHFFFAOYSA-N |
| BoilingPoint | 497.6±55.0 °C at 760 mmHg |
| FlashPoint | 254.8±31.5 °C |
| Purity | >98.0% |
| Density | 1.2±0.1 g/cm3 |
| Solubility | 10 mm in DMSO |
| ShelfLife | 0-4°C for short term (days to weeks), or -20°C for long term (months). |
| VaporPressure | 0.0±1.3 mmHg at 25°C |
| LogP | -2.68 |
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