4,4''-Dibromo-[1,1':4',1''-terphenyl]-2',3'-diamine CAS 1632286-13-5
| CAS No. | 1632286-13-5 |
| Molecular Formula | C18H14Br2N2 |
| Molecular Weight | 418.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
4,4''-Dibromo-[1,1':4',1''-terphenyl]-2',3'-diamine (CAS 1632286-13-5), molecular formula C18H14Br2N2 and molecular weight 418.13 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 4,4''-Dibromo-[1,1':4',1''-terphenyl]-2',3'-diamine (C18H14Br2N2) is characterized by a nitrogen-containing heterocyclic scaffold, a nitrile group, bromine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
Physical & Chemical Properties
| Molecular Formula | C18H14Br2N2 |
| Molecular Weight | 418.13 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 DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
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Recommended Standards
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- (S)-4-(3-Bromo-2-formylphenyl)-1-(tert-butoxy-carbonyl)piperazine-2-carboxylic acid 1786533-40-1 (CAS 1786533-40-1)
- 2′,3′,5′,6′-Tetrahydrospiro[2H-1-benzopyran-2,4′-[4H]pyran]-4(3H)-one (CAS 954422-16-3)
- tert-Butyl 4-((4-methylpyridin-2-yl)amino)piperidine-1-carboxylate (CAS 939986-29-5)
- (2E)-1-(4-Ethoxyphenyl)-3-(3-fluorophenyl)prop-2-en-1-one (CAS 1287402-67-8)
- 3,3-Bis(trifluoromethyl)-1-bromo-4,4,5,5,6,6,6-heptafluorohex-1-ene (CAS 128454-94-4)
- N1-Methyl-N1,N2,N2-triphenyloxalamide (CAS 204776-55-6)
- 1-(5-Aminopyridin-3-yl)cyclopropanecarbonitrile (CAS 2360828-90-4)
- 1-Acetyl-4-(3-bromopropyl)piperazine (CAS 335621-30-2)
- Neuropeptide FF (CAS 99566-27-5)
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