Bromo-PEG5-bromide CAS 67705-77-5
| CAS No. | 67705-77-5 |
| Molecular Formula | C12H24Br2O5 |
| Molecular Weight | 408.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Bromo-PEG5-bromide (CAS 67705-77-5), molecular formula C12H24Br2O5 and molecular weight 408.12 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, Bromo-PEG5-bromide is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 408.12 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
As a certified reference material (CRM), Bromo-PEG5-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 | C12H24Br2O5 |
| Molecular Weight | 408.12 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) | 0.0 |
| CAS Registry Year (est.) | 1976 |
| Halogen Content | Br-containing |
Related Bromo Standards
- N-(3-Bromo-5-trifluoromethyl-pyridin-2-yl)-N-(2-dimethylamino-ethyl)-2,2,2-trifluoro-acetamide (CAS 1311280-44-0)
- Ethyl 5-bromo-2-(4-fluorophenyl)-6-nitrobenzofuran-3-carboxylate (CAS 1333340-14-9)
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- 6-Bromo-3-iodo-1-(tetrahydro-2H-pyran-2-yl)-1H-pyrazolo[3,4-b]pyridine (CAS 1416712-53-2)
- 5-Bromo-3-iodo-1-(tetrahydro-2H-pyran-2-yl)-1H-pyrazolo[3,4-β]pyridine (CAS 1416713-91-1)
- 2-(2-Bromo-6-ethoxy-4-formylphenoxy)-N-(2-methoxyphenyl)acetamide (CAS 832674-13-2)
Recommended Standards
- (4-Bromophenyl)bis(3-chlorophenyl)methanol (CAS 845790-85-4)
- Ethyl 7-(3,5-dibromophenoxy)heptanoate (CAS 1048041-78-6)
- 2,2-Difluoroethyl (2,2,3,3,4,4,5,5,6,6,6-undecafluorohexyl) carbonate (CAS 1980035-41-3)
- 1-(Hexadecyloxy)-4-methylbenzene (CAS 57792-42-4)
- 2-(2-Chloroethyl)-1H-isoindole-1,3-dione (CAS 6270-06-0)
- (1-Phenyl-1H-1,2,3-triazol-4-yl)methyl N-ethylcarbamate (CAS 338757-06-5)
- (3,4-Dichlorophenyl)(1-methyl-1H-pyrrol-2-yl)methanol (CAS 1443349-29-8)
- 4-Bromo-1-iododibenzo[b,d]thiophene (CAS 2096506-52-2)
- Fluralaner Impurity 15 (CAS 1805814-99-6)
- 1-(4-Chloro-3-methylphenoxy)-3-(2,6-dimethylpiperidin-1-yl)propan-2-ol hydrochloride (CAS 1217758-43-4)
- 2-Amino-2-(pyrimidin-2-yl)acetic acid (CAS 500755-96-4)
- 34813-40-6 C5Z6T7TC8Z 1,2-Dilinolenoyl-sn-glycero-3-phosphatidylethanolamine UNII-C5Z6T7TC8Z 9,12,15-Octadecatrienoic acid, 1,1'-((1R)-1-((((2-aminoethoxy)hydroxyphosphinyl)oxy)methyl)-1,2-ethanediyl) ester, (9Z,9'Z,12Z,12'Z,15Z,15'Z)- 1,2-Di-9,12,15-octadecatrienoyl-sn-glycero-3-phosphorylethanolamine 1,2-Dilinolenoyl-sn-glycero-3-phosphatidylethanolamine, (R)- (CAS 34813-40-6)
- Glycerol Impurity 45 (CAS CATO-C4X-217145)
- Peptide 434 (CAS CATO-CPTD788434)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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