5-ethoxy-3,3-dimethyl-5-oxopentanoic acid CAS 71885-49-9
| CAS No. | 71885-49-9 |
| Molecular Formula | C9H16O4 |
| Molecular Weight | 188.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-ethoxy-3,3-dimethyl-5-oxopentanoic acid 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.
5-ethoxy-3,3-dimethyl-5-oxopentanoic acid (CAS 71885-49-9), molecular formula C9H16O4 and molecular weight 188.22 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5-ethoxy-3,3-dimethyl-5-oxopentanoic acid (C9H16O4) contains a carboxylic acid group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 2.0, corresponding to approximately 2 ring(s) or double-bond equivalent(s). With a molecular weight of 188.22 g/mol, it falls into the medium-molecular-weight range.
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 | C9H16O4 |
| Molecular Weight | 188.22 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1977 |
Related ethoxy Standards
- Ethyl 5-ethoxy-3-oxopentanoate (CAS 1519-56-8)
- 2-ethoxy-2-(oxan-4-yl)acetic acid (CAS 1545579-64-3)
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- 4-Ethoxy-2-methylquinazoline (CAS 91350-36-6)
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- Ethyl 3-ethoxy-4-methylpentanoate (CAS 725251-53-6)
Recommended Standards
- 5-Benzyl-3-methylenedihydrofuran-2(3H)-one (CAS 77547-07-0)
- 5-Ethyl-2,2-dimethyl-1,3-dioxane-5-carboxylic acid (CAS 587874-07-5)
- 5-(tert-Butoxy)-5-oxopentanoic Acid (CAS 63128-51-8)
- 5-ethyl-4-(methoxymethyl)furan-2-carboxylic acid (CAS 696627-38-0)
- BTZ6Br (CAS 890704-00-4)
- 3-amino-2-(4-fluorobenzyl)propan-1-ol (CAS 1017371-19-5)
- 3-Methyl-5-(1-(piperidin-4-yl)-1H-1,2,3-triazol-4-yl)-1,2,4-oxadiazole (CAS 1707594-37-3)
- 1'-ethyl-3'-methyl-1-phenyl-1h,1'h-3,4'-bipyraZole-4-carbaldehyde (CAS 1006483-39-1)
- N-(2-Amino-4-bromophenyl)-2-chloroacetamide (CAS 854583-92-9)
- (3-Chloro-2-fluorobenzyl)(3-fluorophenyl)sulfane (CAS 1443312-65-9)
- N-Methylpyrrolidine-3-carboxamide hydrochloride (CAS 1361115-18-5)
- Esomeprazole Impurity 123 (CAS 784143-42-6/89352-76-1)
- Metformin Impurity 536 (CAS CATO-C4X-1220536)
- Peptide 442 (CAS CATO-CPTD788442)
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