rel-(2R,3S)-1,2,3,4-Tetrabromobutane CAS 2657-67-2
| CAS No. | 2657-67-2 |
| Molecular Formula | C4H6Br4 |
| Molecular Weight | 373.71 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
rel-(2R,3S)-1,2,3,4-Tetrabromobutane (CAS 2657-67-2), molecular formula C4H6Br4 and molecular weight 373.71 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C4H6Br4, rel-(2R,3S)-1,2,3,4-Tetrabromobutane contains bromine substitution; these features give the compound characteristic molecular-ion distribution patterns in mass spectrometry. The molecular weight of 373.71 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.
As a certified reference material (CRM), rel-(2R,3S)-1,2,3,4-Tetrabromobutane 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 | C4H6Br4 |
| Molecular Weight | 373.71 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 0.0 |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Br-containing |
Recommended Standards
- 5-[(4-Chlorophenyl)sulfanyl]-4-(3,4-dichlorophenyl)-1,2,3-thiadiazole (CAS 400082-14-6)
- 1,2,3,4-Tetrabromobutane (CAS 1529-68-6)
- 5-[(2-Chlorophenyl)sulfanyl]-4-(3,4-dichlorophenyl)-1,2,3-thiadiazole (CAS 400082-16-8)
- 1-(2-{[3-chloro-5-(trifluoromethyl)pyridin-2-yl]amino}ethyl)-3-methyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidine-5-carbonitrile (CAS 338770-14-2)
- NH-bis-PEG5 (CAS 63721-06-2)
- 2,7-Dichloro-3-methylquinoline (CAS 132118-46-8)
- 3,5-Dioxopyrazolidine-4-carbohydrazide (CAS 85791-90-8)
- Polyphyllin Ii (CAS 76296-72-5)
- (2R,3R)-1-[(tert-butoxy)carbonyl]-3-fluoropyrrolidine-2-carboxylic acid (CAS 330945-14-7)
- 5-Bromo-1<I>H</I>-pyrazolo[4,3-<I>b</I>]pyridine (CAS 1227628-78-5)
- 2-Amino-N-(1-(2,5-dimethylthiophen-3-yl)ethyl)butanamide (CAS 1218434-43-5)
- 3-(4-bromophenoxy)propan-1-ol (CAS 67900-64-5)
- 7783-03-1 J4D6K0RX2G Tungstic(VI) acid Dihydrogen wolframate Tungstate (WO42-), dihydrogen, (beta-4)- Tungstic acid (H2WO4) Tungstate (WO42-), hydrogen (1:2), (T-4)- Tungstate (WO42-), dihydrogen, (T-4)- EINECS 231-975-2 UNII-J4D6K0RX2G EC 231-975-2 (CAS 7783-03-1)
- Insulin Degludec Impurity 12 (CAS CATO-C4X-215712)
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