4-Bromo-1-butene-<SUP>13</SUP>C<SUB>4</SUB> CAS 1173021-12-9
| CAS No. | 1173021-12-9 |
| Molecular Formula | [13C]4H7Br |
| Molecular Weight | 138.97 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-Bromo-1-butene-<SUP>13</SUP>C<SUB>4</SUB>.
4-Bromo-1-butene-<SUP>13</SUP>C<SUB>4</SUB> (CAS 1173021-12-9) is a high-purity analytical reference standard with the molecular formula [13C]4H7Br and a molecular weight of 138.97 g/mol.
4-Bromo-1-butene-<SUP>13</SUP>C<SUB>4</SUB> ([13C]4H7Br) contains bromine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
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 | [13C]4H7Br |
| Molecular Weight | 138.97 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | -2.0 |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Br-containing |
Related Bromo Standards
- 1-Bromo-2-fluorocyclopropane (CAS 1185112-51-9)
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- 3-Bromo-1-propanol (CAS 627-18-9)
- 2-Bromo-1-propanol (CAS 598-18-5)
- 1-Bromo-2-propanol (contains ca. 20% 2-Bromo-1-propanol) (stabilized with MgO) (CAS 19686-73-8)
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Recommended Standards
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- Bromoacetic Acid (CAS 79-08-3)
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- 3,5-Dichloro-1,2,4-oxadiazole (CAS 37579-29-6)
- (S)-tert-Butyl (4-(2-aminopropanamido)cyclohexyl)(isopropyl)carbamate (CAS 1353994-75-8)
- 1,3-Di-p-tolylisobenzofuran (CAS 62422-95-1)
- 5-fluoro-4-formyl-2-nitrobenzonitrile (CAS 1803590-78-4)
- 5-Amino-1-benzofuran-2-carboxylic acid (CAS 42933-44-8)
- 6-Bromo-2-(phenylsulfonyl)-1H-indole (CAS 1956326-60-5)
- Methyl 3-((4-methylphenyl)sulfonamido)thiophene-2-carboxylate (CAS 79128-72-6)
- 3-Amino-2,4-dichloro-5-fluorobenzoic acid (CAS 115549-13-8)
- 1-(2,3-Difluorophenyl)propan-1-ol (CAS 574755-22-9)
- 2-(Piperidin-4-yl)-5-(trifluoromethyl)pyrimidine (CAS 944903-11-1)
- Anorexigenic Peptide (CAS 69275-10-1)
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