3,7-Dibromo-1,5-diphenylnaphthalene CAS 872610-33-8
| CAS No. | 872610-33-8 |
| Molecular Formula | C22H14Br2 |
| Molecular Weight | 438.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 3,7-Dibromo-1,5-diphenylnaphthalene is closely related to bromine substitution, a polycyclic aromatic system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 3,7-Dibromo-1,5-diphenylnaphthalene (CAS 872610-33-8), a certified reference material (molecular formula C22H14Br2, MW 438.15 g/mol) for analytical method development and quality control.
Structurally, 3,7-Dibromo-1,5-diphenylnaphthalene (C22H14Br2) contains bromine substitution, a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 15.0, corresponding to approximately 15 ring(s) or double-bond equivalent(s). With a molecular weight of 438.15 g/mol, it falls into the moderately-high-molecular-weight range. 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 | C22H14Br2 |
| Molecular Weight | 438.15 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Br-containing |
Related Dibromo Standards
- 2,3-Dibromo-1,4-diphenylnaphthalene (CAS 127257-79-8)
- 4,4′-Dibromo-2,2′,3,3′-tetrahydro-7,7′-dimethoxy-1,1′-spirobi[1H-indene] (CAS 223137-76-6)
- (3,5-Dibromo-4-methoxyphenyl)-(2-ethyl-1-benzofuran-3-yl)methanone (CAS 51073-13-3)
- 4-{2-[2-(2,4-Dibromo-6-methylphenoxy)acetyl]hydrazino}-4-oxobutanoic acid (CAS 458551-03-6)
- 2,5-Dibromo-3-tetradecylthiophene (CAS 160096-74-2)
- 4,6-Dibromo-2-(2-chloro-4,5-difluorophenyl)-1,3-benzoxazol-5-amine (CAS 637303-09-4)
- 3,6-Dibromo-9-(2-ethylhexyl)-9H-carbazole (CAS 173063-52-0)
- 1,8-Dibromo-3,6-di-tert-butyl-9H-carbazole (CAS 625385-37-7)
Recommended Standards
- 6-Chloro-2-(4-chlorophenyl)-1-((2,4-dichlorobenzyl)oxy)-1H-benzo[d]imidazole (CAS 338978-93-1)
- Dimethyl 2,2'-(adamantane-1,3-diyl)bis(2-bromoacetate) (CAS 202534-05-2)
- 2,3-Dichloro-α-(2,3-dichloro-4-methoxyphenyl)-4-methoxy-benzeneacetic Acid Ethyl Ester (CAS 316382-53-3)
- Pretomanid Impurity 29 (CAS CATO-C4X-260629)
- 1-(2-Iodobenzyl)piperidine (CAS 76464-88-5)
- 4-(Chloromethyl)thiophene-2-carbaldehyde (CAS 33148-81-1)
- 3-([2,2'-Bipyridin]-5-yl)-2-aminopropanoic acid hydrochloride (CAS 2044702-29-4)
- Cinacalcet Impurity 81 (CAS CATO-C4X-105981)
- Folic Acid Dihydrate - Impurity B (Hydrochloride Salt) (CAS 4066-47-1)
- (R)-3-(Furan-3-yl)morpholine (CAS 1212827-57-0)
- 5-Ethyl 3,4-dichloro-1H-pyrrole-2,5-dicarboxylate (CAS 350687-13-7)
- 5-((3-Methyl-1h-pyrazol-1-yl)methyl)-4-((tetrahydrofuran-2-yl)methyl)-4h-1,2,4-triazole-3-thiol (CAS 1005624-63-4)
- 5,6-Diamino-3-methyl-8-morpholino-2-oxo-2,3-dihydro-1h-pyrrolo[2,3-c][2,7]naphthyridine-9-carbonitrile (CAS 885524-48-1)
- Insulin Degludec Impurity 6 (CAS CATO-C4X-21576)
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