1,4-Bis(4-bromophenyl)buta-1,3-diyne CAS 959-88-6
| CAS No. | 959-88-6 |
| Molecular Formula | C16H8Br2 |
| Molecular Weight | 360.04 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 1,4-Bis(4-bromophenyl)buta-1,3-diyne.
1,4-Bis(4-bromophenyl)buta-1,3-diyne (CAS 959-88-6), molecular formula C16H8Br2 and molecular weight 360.04 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to bromine substitution, a polycyclic aromatic system, 1,4-Bis(4-bromophenyl)buta-1,3-diyne is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 360.04 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C16H8Br2 |
| Molecular Weight | 360.04 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Br-containing |
Related Bis Standards
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- 2-(4-Bromophenyl)-6-fluoro-3-methylquinoline-4-carboxylic acid (CAS 130507-37-8)
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- 3-(4-Bromophenyl)-3-(1-oxo-2,3-dihydro-1H-isoindol-2-yl)propanoic acid (CAS 478079-08-2)
- N-(3-Bromophenyl)-6,7-dimethoxyquinazolin-4-amine (CAS 153436-54-5)
- 4-(4-Bromophenyl)-2-(3-methoxybenzyl)-2,4-dihydro-3H-1,2,4-triazol-3-one (CAS 343373-38-6)
- 4-(7-(4-Bromophenyl)-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl)morpholine (CAS 320415-87-0)
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Recommended Standards
- 1,3-Dibromopyrene (CAS 38037-54-6)
- 1,6-Dibromopyrene (CAS 27973-29-1)
- 4,4'-Bis(bromoethynyl)-1,1'-biphenyl (CAS 1800534-49-9)
- 1,8-Dibromopyrene (CAS 38303-35-4)
- N-(4-fluorophenyl)-2-(4-(4-fluorophenyl)piperazin-1-yl)acetamide (CAS 303091-62-5)
- (S)-2-(2-aminoacetamido)-3-(4-hydroxyphenyl)propanamide acetate 15761-60-1 Gly-Try amide acetate salt (CAS 15761-60-1)
- 2-[2-Hydroxy-5-[2-(methacryloyloxy)ethyl]phenyl]-2H-benzotriazole (CAS 96478-09-0)
- 5-Oxo-1-(4H-1,2,4-triazol-4-yl)pyrrolidine-3-carboxylic acid (CAS 898645-54-0)
- 6-Methyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-3-amine (CAS 148777-83-7)
- Piribedil Impurity 21 (CAS 147262-41-7)
- 5-(Methylsulfanyl)thiophene-3-carboxylic acid (CAS 88511-90-4)
- (3R,4R)-1-(tert-butoxycarbonyl)-4-(methoxycarbonyl)pyrrolidine-3-carboxylic acid (CAS 1903426-35-6)
- 4-(Chloromethyl)-5-((4-chlorophenyl)thio)-1-methyl-3-phenyl-1H-pyrazole (CAS 318247-65-3)
- D-Ala35-Tirzepatide (CAS CATO-CPTD788904)
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