2',5'-Dibromo-[1,1':4',1''-terphenyl]-4,4''-dicarbaldehyde CAS 2375652-86-9
| CAS No. | 2375652-86-9 |
| Molecular Formula | C20H12Br2O2 |
| Molecular Weight | 444.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2',5'-Dibromo-[1,1':4',1''-terphenyl]-4,4''-dicarbaldehyde (CAS 2375652-86-9), molecular formula C20H12Br2O2 and molecular weight 444.12 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a steroid core, a hydroxyl group, an ether linkage, bromine substitution, 2',5'-Dibromo-[1,1':4',1''-terphenyl]-4,4''-dicarbaldehyde is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 444.12 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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), 2',5'-Dibromo-[1,1':4',1''-terphenyl]-4,4''-dicarbaldehyde 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 | C20H12Br2O2 |
| Molecular Weight | 444.12 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, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1999 |
| Halogen Content | Br-containing |
Related Dibromo Standards
- (R)-(+)-3,3’-Dibromo-1,1’-bi-2-naphthol (CAS 111795-43-8)
- (S)-(-)-3,3’-Dibromo-1,1’-bi-2-naphthol (CAS 119707-74-3)
- (R)-(+)-3,3-Dibromo-1,1-bi-2-naphthol (CAS 149821-06-7)
- (R)-(-)-6,6’-Dibromo-1,1’-bi-2-naphthol (CAS 65283-60-5)
- (S)-(+)-6,6’-Dibromo-1,1’-bi-2-naphthol (CAS 80655-81-8)
- 2,4-Dibromo-16a-hydroxyestrone (CAS 79258-14-3)
- trans-3,4-Dibromo-N-methyl-N-(1-methyl-1-azaspiro[4.5]dec-6-yl)-benzamide (CAS 119878-31-8)
- 1,6-Dibromo-3,8-diisopropylpyrene (CAS 869340-02-3)
Recommended Standards
- 1,4-Phenylenebis((4-bromophenyl)methanone) (CAS 52497-29-7)
- Ambroxol Impurity 101 (CAS CATO-C4X-1085101)
- Perfluoro-3,6-dioxa-4-methyl-7-octene-1-sulfonic acid (CAS 29311-67-9)
- 4-(2,4-dinitrophenoxy)-3-iodo-5-methoxybenzaldehyde (CAS 792947-74-1)
- 1-(6-(2H-1,2,3-Triazol-2-yl)-5-(trifluoromethyl)pyridin-3-yl)-3-(7-(1-(dimethylamino)propyl)-2-methylthiazolo[5,4-b]pyridin-6-yl)urea (CAS 2178990-99-1)
- 2-Phenyl-1,8-dihydrocyclohepta[b]pyrrole (CAS 106111-52-8)
- Methyl 2-(4-iodo-3-methyl-1H-pyrazol-1-yl)propanoate (CAS 1354705-30-8)
- Glucose Impurity 35 (CAS CATO-C4X-209535)
- Benvitimod Impurity 11 (CAS 2772354-76-2)
- 1-(Tetrahydro-2H-pyran-4-yl)cyclobutane-1-carboxylic acid (CAS 1503518-93-1)
- 4,4'-(Hydrazine-1,2-diylbis(oxomethylene))bis(4,1-phenylene)diboronic acid, pinaool ester (CAS 2096338-52-0)
- 4-Amino-n-(3,5-dichlorophenyl)benzene-1-sulfonamide (CAS 5407-59-0)
- 2-Chloro-4-methyl-1-(3-nitrophenyl)benzene (CAS 1355247-82-3)
- Peptide Impurity 40 (CAS CATO-CPTD788840)
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