Propargyl-PEG5-Br CAS 1287660-83-6
| CAS No. | 1287660-83-6 |
| Molecular Formula | C13H23BrO5 |
| Molecular Weight | 339.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Propargyl-PEG5-Br (CAS 1287660-83-6), a certified reference material (molecular formula C13H23BrO5, MW 339.22 g/mol) for analytical method development and quality control.
Based on its molecular formula C13H23BrO5, Propargyl-PEG5-Br contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 339.22 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 Formula | C13H23BrO5 |
| Molecular Weight | 339.22 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Br-containing |
Related Propargyl Standards
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- Propargyl-PEG6-N3 (CAS 1198080-03-3)
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- Propargyl-PEG6-acid (CAS 1951438-84-8)
- Propargyl-PEG5-Ms (CAS 1036204-62-2)
- Propargyl-NH-PEG3-C2-NHS ester (CAS 1214319-94-4)
Recommended Standards
- Trans-N,N'-Bis-(6-chloro-pyrimidin-4-yl)-cyclohexane-1,4-diamine (CAS 1261233-32-2)
- N1,N4-Bis(6-chloropyrimidin-4-yl)cyclohexane-1,4-diamine (CAS 1417794-24-1)
- 1020723-13-0 7577AC C16H16Cl2N2O2 N-(5-Amino-2-methylphenyl)-2-(2,4-dichlorophenoxy) propanamide (CAS 1020723-13-0)
- (3-(2,6-Dichlorophenyl)-5-methylisoxazol-4-yl)(piperidin-1-yl)methanone (CAS 153948-82-4)
- 2-(4-(Difluoromethyl)-2,6-dimethoxypyridin-3-yl)acetic acid (CAS 1804712-08-0)
- 2-[5-(oxan-4-yl)-1,3,4-oxadiazol-2-yl]piperidine hydrochloride (CAS 1803567-39-6)
- 3-((4-Ethylphenyl)sulfonyl)-N-(thiophen-2-ylmethyl)thieno[2,3-e][1,2,3]triazolo[1,5-a]pyrimidin-5-amine (CAS 892742-76-6)
- Folic Acid Impurity 13 (CAS CATO-C4X-139513)
- 1-Amino-5,6,7,8-tetrahydronaphthalene-2-carbonitrile (CAS 1209458-55-8)
- Sodium 2-methylpropane-1-sulfinate (CAS 39170-40-6)
- 3,6-Dibromo-9-(triphenylen-2-yl)carbazole (CAS 1351870-16-0)
- Neostigmine Impurity 5 (CAS 3743-22-4)
- 5-(2,3,4-trifluorobenzyl)-1,3-thiazol-2-amine (CAS 926188-02-5)
- Peptide Impurity 34 (CAS 21282-09-7)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com