5-Isobenzofurancarboxylic acid, 1,3-dihydro-1,3-dioxo-, polymer with 2,2'-oxybis[ethanol] and 3a,4,7,7a-tetrahydro-1,3-isobenzofurandione CAS 70942-07-3
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 70942-07-3 |
| Molecular Formula | C9H4O5 C8H8O3 C4H10O3 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Isobenzofurancarboxylic acid, 1,3-dihydro-1,3-dioxo-, polymer with 2,2'-oxybis[ethanol] and 3a,4,7,7a-tetrahydro-1,3-isobenzofurandione (CAS 70942-07-3) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C9H4O5 C8H8O3 C4H10O3. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C9H4O5 C8H8O3 C4H10O3 |
| Molecular Weight | 450.40 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
Related Isobenzofurancarboxylic Standards
- 5-Isobenzofurancarboxylic acid, 1,3-dihydro-1,3-dioxo-, polymer with 1,4-cyclohexanedimethanol and 3a,4,7,7a-tetrahydro-1,3-isobenzofurandione (CAS 153640-63-2)
- 5-Isobenzofurancarboxylic acid, 1,3-dihydro-1,3-dioxo-, polymer with 1,1'-methylenebis[4-isocyanatobenzene] (CAS 25053-57-0)
- 5-Isobenzofurancarboxylic acid, 1,3-dihydro-1,3-dioxo-, polymer with 4,4'-methylenebis[benzenamine] and rel-(3aR,4S,7R,7aS)-3a,4,7,7a-tetrahydro-4,7-methanoisobenzofuran-1,3-dione (CAS 53368-84-6)
- 5-Isobenzofurancarboxylic acid, 1,3-dihydro-1,3-dioxo-, polymer with 5,5'-carbonylbis[1,3-isobenzofurandione], 2,4-diisocyanato-1-methylbenzene and 1,1'-methylenebis[4-isocyanatobenzene] (CAS 62009-59-0)
- 5-Isobenzofurancarboxylic acid, 1,3-dihydro-1,3-dioxo-, polymer with 1,2-propanediol (CAS 63948-88-9)
- 5-Isobenzofurancarboxylic acid, 1,3-dihydro-1,3-dioxo-, polymer with ethenylbenzene and 2-propen-1-ol (CAS 65186-04-1)
- 5-Isobenzofurancarboxylic acid, 1,3-dihydro-1,3-dioxo-, polymer with 4,4'-oxybis[benzenamine] and 4,4'-[sulfonylbis(4,1-phenyleneoxy)]bis[benzenamine] (CAS 72968-66-2)
- 5-Isobenzofurancarboxylic acid, 1,3-dihydro-1,3-dioxo-, polymer with 4,4'-oxybis[benzenamine] and 3,3'-[sulfonylbis(4,1-phenyleneoxy)]bis[benzenamine] (CAS 72968-67-3)
Recommended Standards
- tert-Butyl 5-amino-8-(hydroxymethyl)-1,2,3,4-tetrahydroisoquinoline-2-carboxylate (CAS 2060052-26-6)
- 1-(2,6-Dibromobenzyl)piperidine (CAS 1414870-72-6)
- O-(5-Norbornene-2,3-dicarboximido)-N,N,N',N'-tetramethyluronium Hexafluorophosphate (CAS 208462-94-6)
- 2-((4-(4-Chlorophenyl)-5-(pyridin-4-yl)-4H-1,2,4-triazol-3-yl)thio)-N-(o-tolyl)acetamide (CAS 476484-03-4)
- Ibrutinib Impurity 175 (CAS CATO-C4X-1064175)
- 3-Butoxy-4-fluorobenzaldehyde (CAS 1378815-44-1)
- Semaglutide Impurity 184 (CAS CATO-C4X-2226184)
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