((2,3,5,6-Tetramethyl-1,4-phenylene)bis(ethyne-2,1-diyl))dibenzene CAS 140477-37-8
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 140477-37-8 |
| Molecular Formula | C26H22 |
| Molecular Weight | 334.45 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies ((2,3,5,6-Tetramethyl-1,4-phenylene)bis(ethyne-2,1-diyl))dibenzene (CAS 140477-37-8), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C26H22. Molecular weight: 334.45 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C26H22 |
| Molecular Weight | 334.45 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
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Recommended Standards
- (5S,6E,8Z,10Z,14Z)-5-Hydroxy-12-oxoicosa-6,8,10,14-tetraenoic acid (CAS 136696-10-1)
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- Benzyl ((1-(2-hydroxyethyl)piperidin-2-yl)methyl)(isopropyl)carbamate (CAS 1353987-46-8)
- 2-(Cyclopent-2-en-1-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 287944-11-0)
- 1-Chloro-1-methylcyclopentane (CAS 6196-85-6)
- Beclometasone Impurity 43 (CAS CATO-C4X-147443)
- 3-(4-methyl-1,3-thiazol-2-yl)phenol (CAS 1092305-67-3)
- Paliperidone Impurity 84 HCl (CAS CATO-C4X-172484)
- DL-Asparagine monohydrate (CAS 69833-18-7)
- Neuropeptide Y (13-36) (porcine) (CAS 113662-54-7)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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