1189478-81-6 alpha-Methyl-3-oxo-cyclohexanemalonic Acid-d3 Diethyl Ester CAS 1189478-81-6
| CAS No. | 1189478-81-6 |
| Molecular Formula | - |
| Molecular Weight | 273.34 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 1189478-81-6 alpha-Methyl-3-oxo-cyclohexanemalonic Acid-d3 Diethyl Ester.
1189478-81-6 alpha-Methyl-3-oxo-cyclohexanemalonic Acid-d3 Diethyl Ester (CAS 1189478-81-6), molecular formula C14H19D3O5 and molecular weight 273.34 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 1189478-81-6 alpha-Methyl-3-oxo-cyclohexanemalonic Acid-d3 Diethyl Ester (C14H19D3O5) contains deuterium isotope labeling, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.5, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 273.34 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C14H19D3O5 |
| Molecular Weight | 273.34 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| 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 | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
Recommended Standards
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- ethyl cis-1-benzyl-3-fluoro-4-hydroxy-pyrrolidine-3-carboxylate (CAS 1058142-02-1)
- Tert-butyl 3-fluoro-1-oxa-8-azaspiro[4.6]Undecane-8-carboxylate (CAS 2306261-52-7)
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- Ethyl 4-(hydroxymethyl)piperidine-1-carboxylate (CAS 118156-56-2)
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- 6-Isobutylpyridin-3-amine (CAS 1241675-03-5)
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- Palmitoyl Hexapeptide-12 (CAS 171263-26-6)
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