5-Bromo-1,1,3,3-tetramethyl-2,3-dihydro-1H-indene CAS 169695-24-3
| CAS No. | 169695-24-3 |
| Molecular Formula | C13H17Br |
| Molecular Weight | 253.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 253.18 g/mol gives 5-Bromo-1,1,3,3-tetramethyl-2,3-dihydro-1H-indene distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
5-Bromo-1,1,3,3-tetramethyl-2,3-dihydro-1H-indene (CAS 169695-24-3), molecular formula C13H17Br and molecular weight 253.18 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to bromine substitution, an aromatic ring system, 5-Bromo-1,1,3,3-tetramethyl-2,3-dihydro-1H-indene is typically off-white to pale yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 253.18 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.
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), 5-Bromo-1,1,3,3-tetramethyl-2,3-dihydro-1H-indene 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 | C13H17Br |
| Molecular Weight | 253.18 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2005 |
| Halogen Content | Br-containing |
Related Bromo Standards
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Recommended Standards
- 1-(3-Bromopropyl)-1,2,3,4-tetrahydronaphthalene (CAS 161923-63-3)
- Methyl 3-(difluoromethoxy)-5-nitrothiophene-2-carboxylate (CAS 1710202-54-2)
- [4-(bromomethyl)cyclohexyl]benzene (CAS 1521961-37-4)
- 1-Isopropyl-4-nitro-3-(2,2,2-trifluoroethoxy)-1H-pyrazole (CAS 1429418-01-8)
- N-Methyl-1-(2-(methylthio)pyrimidin-4-yl)piperidin-4-amine hydrochloride (CAS 1261235-21-5)
- 1-[4-(methylsulfanyl)phenyl]-5-oxopyrrolidine-3-carboxylic acid (CAS 63674-53-3)
- Ethyl 2-(chloromethyl)-5-methylnicotinate (CAS 124796-97-0)
- 3-(Benzo[d][1,3]dioxol-5-ylamino)-1-(4-chlorophenyl)propan-1-one (CAS 477333-87-2)
- 5-(Difluoromethyl)-5-methylpyrrolidine-2,4-dione (CAS 2103987-18-2)
- 2-Chloro-5-nitroisophthalic Acid (CAS 87350-83-2)
- 1-Isobutyl-5-methyl-1H-pyrazole-4-carboxylic acid (CAS 725746-95-2)
- 3-Hydroxy-4-isopropylbenzoic acid (CAS 19420-59-8)
- (R)-2-Amino-4-(2,3,4-trimethoxyphenyl)butanoic acid (CAS 1260606-05-0)
- Tau Peptide (244-274) (Repeat 1 Domain) trifluoroacetate salt (CAS 330456-24-1)
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