Propargyl-PEG3-bromide CAS 203740-63-0
| CAS No. | 203740-63-0 |
| Molecular Formula | C9H15BrO3 |
| Molecular Weight | 251.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Propargyl-PEG3-bromide (C9H15BrO3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 2.0, corresponding to approximately 2 ring(s) or double-bond equivalent(s). With a molecular weight of 251.12 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO supplies Propargyl-PEG3-bromide (CAS 203740-63-0), a certified reference material (molecular formula C9H15BrO3, MW 251.12 g/mol) for analytical method development and quality control.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), Propargyl-PEG3-bromide 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.
Physical & Chemical Properties
| Molecular Formula | C9H15BrO3 |
| Molecular Weight | 251.12 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 2015 |
| Halogen Content | Br-containing |
Related Propargyl Standards
- Propargyl-PEG3-phosphonic acid (CAS 1714139-62-4)
- Propargyl-PEG4-thiol (CAS 1347750-80-4)
- Propargyl-PEG2-Tos (CAS 145916-41-2)
- Propargyl-PEG3-CH2COOH (CAS 1694731-93-5)
- Propargyl-PEG4-methylamine (CAS 1807530-11-5)
- Propargyl-PEG2-NHBoc (CAS 869310-84-9)
- Propargyl-PEG4-acid (CAS 1415800-32-6)
- Propargyl-PEG1-SS-PEG1-acid (CAS 1807503-85-0)
Recommended Standards
- ethyl 5-(bromomethyl)-2-methyl-pyrazole-3-carboxylate (CAS 199480-29-0)
- 2-Bromo-5-methoxybenzoic Acid Methyl Ester 35450-36-3 6-Bromo-m-anisic Acid Methyl Ester M1934 Methyl 2-Bromo-5-methoxybenzoate Methyl 6-Bromo-m-anisate (CAS 35450-36-3)
- ethyl (1S,3S,4R)-4-bromo-3-hydroxycyclohexane-1-carboxylate (CAS 2227198-93-6)
- 2-(2-BROMO-4-METHOXYPHENYL)ACETIC ACID 2-BROMO-4-METHOXYPHENYLACETCI ACID 2-BROMO-4-METHOXYPHENYLACETIC ACID 66916-99-2 BC002688 (CAS 66916-99-2)
- C18E4 (CAS 59970-10-4)
- 6-Methyl-4-(trifluoromethyl)nicotinonitrile (CAS 13600-49-2)
- 3-([1,2,4]Triazolo[4,3-a]pyridin-3-yl)propan-1-amine dihydrochloride (CAS 1949815-72-8)
- 1,2,4,5-Tetrabromomethylbenzene (CAS 15442-91-8)
- Ethyl 2,6-difluoro-3-methylbenzoate (CAS 773135-48-1)
- 1-[(2-Chloro-6-{[1-methyl-4-(propan-2-yl)-7-oxabicyclo[2.2.1]heptan-2-yl]oxy}phenyl)methyl]-3-(prop-2-en-1-yl)thiourea (CAS 1005261-37-9)
- (S)-1-(4-Chloropyridin-2-yl)ethanamine hydrochloride (CAS 1415257-52-1)
- 8-tert-Butyl-4-(4-methyl-3-nitrobenzoyl)-1-oxa-4-azaspiro[4.5]decane-3-carboxylic acid (CAS 1326810-10-9)
- Tris(3-phenylpropyl)phosphine oxide (CAS 145702-44-9)
- Semaglutide impurity 69 (CAS CATO-C4X-222669)
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