Pentanoic Acid Oxybis(methylene) Ester CAS 40657-33-8
| CAS No. | 40657-33-8 |
| Molecular Formula | C12H22O5 |
| Molecular Weight | 246.30 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Pentanoic Acid Oxybis(methylene) Ester is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Pentanoic Acid Oxybis(methylene) Ester (CAS 40657-33-8), molecular formula C12H22O5 and molecular weight 246.30 g/mol, is a CATO reference standard with documented purity and traceability.
Pentanoic Acid Oxybis(methylene) Ester (C12H22O5) contains a carboxylic acid group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions.
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 | C12H22O5 |
| Molecular Weight | 246.30 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1968 |
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Recommended Standards
- Parishin b, 98% (CAS 23554-79-2)
- PPOH (CAS 206052-01-9)
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- rel-((4aS,9bR)-ethyl 3,4,4a,5-tetrahydro-1H-pyrido[4,3-b]indole-2(9bH)-carboxylate) (CAS 199725-38-7)
- Methyl 2-methyl-5-oxo-4-[(4-phenoxyanilino)methylene]-4,5-dihydro-1H-pyrrole-3-carboxylate (CAS 477865-45-5)
- Benzyl (2-(1,4-dioxaspiro[4.5]Decan-8-yl)ethyl)carbamate (CAS 2383887-08-7)
- 1-Methylquinoline-2,3,4(1H)-trione (CAS 2291-40-9)
- (R)-3-Boc-2,2-dimethyloxazolidine-4-carboxylic Acid (CAS 660852-86-8)
- 4-Amino-[1,2,4]triazolo[5,1-c][1,2,4]triazine-3-carbonitrile (CAS 61033-27-0)
- 3-Cyclopropoxy-4-methoxyaniline (CAS 1243407-05-7)
- 5-Methyl-1-indanone (CAS 4593-38-8)
- 1-(2-Fluoroethyl)-1H-pyrazole-4-carbaldehyde (CAS 1421601-86-6)
- 3-Benzyl-1-methylquinazoline-2,4(1H,3H)-dione (CAS 199587-91-2)
- Tirzepatide Impurity 52 (CAS CATO-C4X-324052)
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