3-(((5-Chloro-2-methoxyphenyl)amino)methylene)-1,5-dioxaspiro[5.5]undecane-2,4-dione CAS 370843-64-4
| CAS No. | 370843-64-4 |
| Molecular Formula | C17H18ClNO5 |
| Molecular Weight | 351.78 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
3-(((5-Chloro-2-methoxyphenyl)amino)methylene)-1,5-dioxaspiro[5.5]undecane-2,4-dione (CAS 370843-64-4) is a high-purity analytical reference standard with the molecular formula C17H18ClNO5 and a molecular weight of 351.78 g/mol.
Structurally, 3-(((5-Chloro-2-methoxyphenyl)amino)methylene)-1,5-dioxaspiro[5.5]undecane-2,4-dione (C17H18ClNO5) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 351.78 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C17H18ClNO5 |
| Molecular Weight | 351.78 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
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Recommended Standards
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- 3-tert-Butyl-5-nitrobenzoic acid (CAS 1369799-51-8)
- 3-Amino-3-(4-(difluoromethoxy)phenyl)propanoic acid (CAS 127842-68-6)
- Ac-Tyr-Val-Ala-Asp-chloromethylketone (CAS 178603-78-6)
- 2-[(3,4-Dichlorobenzyl)oxy]-3-methoxybenzoyl chloride (CAS 1160251-31-9)
- Methyl 3-(5-(chloromethyl)-1,2,4-oxadiazol-3-yl)-4-methoxybenzoate (CAS 1119450-91-7)
- (R)-2-(2-((3,3-dibutyl-7-(methylthio)-1,1-dioxido-5-phenyl-2,3,4,5-tetrahydrobenzo[b][1,4]thiazepin-8-yl)oxy)acetamido)-2-phenylacetic acid (CAS 439086-76-7)
- Dibromo(1,5-cyclooctadiene)palladium(II) (CAS 12145-47-0)
- 2-(3-(4-((1H-Purin-6-yl)thio)butyl)ureido)acetic acid (CAS 88090-80-6)
- Benzyl 2-(((S)-2-amino-N,3-dimethylbutanamido)methyl)piperidine-1-carboxylate (CAS 1354024-22-8)
- Semaglutide Impurity 192 (CAS CATO-C4X-2226192)
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