4,4'-(1,4-Phenylenebis(oxy))diphthalic acid CAS 18959-88-1
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 18959-88-1 |
| Molecular Formula | C22H14O10 |
| Molecular Weight | 438.34 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 4,4'-(1,4-Phenylenebis(oxy))diphthalic acid (CAS 18959-88-1), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C22H14O10. Molecular weight: 438.34 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C22H14O10 |
| Molecular Weight | 438.34 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; 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.) | 1962 |
Related Phenylenebis Standards
- 1,4-Phenylenebis(diphenylmethanol) (CAS 57155-57-4)
- 1,3-Phenylenebis((4-bromophenyl)methanone) (CAS 136039-69-5)
- 1,4-Phenylenebis((4-bromophenyl)methanone) (CAS 52497-29-7)
- 1,1'-(1,3-Phenylenebis(propane-2,2-diyl))bis(3-(pyridin-3-yl)urea) (CAS 847934-17-2)
- 2,2'-((1,4-Phenylenebis(methylene))bis(oxy))bis(isoindoline-1,3-dione) (CAS 30777-94-7)
- 5,5'-(((1,4-Phenylenebis(methylene))bis(azanediyl))bis(methylene))bis(quinolin-8-ol) (CAS 918907-58-1)
- 1,1'-((1,3-Phenylenebis(oxy))bis(4,1-phenylene))bis(1H-pyrrole-2,5-dione) (CAS 115341-26-9)
- 1,1'-((1,4-Phenylenebis(oxy))bis(4,1-phenylene))bis(1H-pyrrole-2,5-dione) (CAS 82577-60-4)
Recommended Standards
- 4-(2-Bromobenzyl)-1-(phenylsulfonyl)piperidine-4-carboxylic acid (CAS 1171661-56-5)
- Butane-1,4-diyl bis(1,3-dioxo-1,3-dihydroisobenzofuran-5-carboxylate) (CAS 2899-87-8)
- Riboflavin Impurity 24 (CAS CATO-C4X-181924)
- 8-Bromo-[1,2,4]triazolo[1,5-c]pyrimidine-5,7-diamine (CAS 885878-34-2)
- 1-(Tert-butyl)-3-cyclobutylurea (CAS 932807-80-2)
- Cis-Benzyl 3-Fluoro-4-Hydroxy-4-Methylpiperidine-1-Carboxylate (CAS 1678510-36-5)
- 4-Chloro-2-fluorophenylhydrazine Hydrochloride (CAS 64172-78-7)
- 5-Bromo-2-((trifluoromethyl)thio)pyrimidine (CAS 2091632-09-4)
- N1-(1-(Piperazin-1-yl)ethyl)ethane-1,2-diamine (CAS 114289-17-7)
- Cholecystokinin Octapeptide free acid (desulfated) (H-2075.0001) (CAS 103974-46-5)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 13829788188 / jacky.chen@cato-chem.com