Dimethyl 2-methylenepentanedioate CAS 5621-44-3
| CAS No. | 5621-44-3 |
| Molecular Formula | C8H12O4 |
| Molecular Weight | 172.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Dimethyl 2-methylenepentanedioate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Dimethyl 2-methylenepentanedioate (CAS 5621-44-3) is a high-purity analytical reference standard with the molecular formula C8H12O4 and a molecular weight of 172.18 g/mol.
Dimethyl 2-methylenepentanedioate (C8H12O4) 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. 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).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C8H12O4 |
| Molecular Weight | 172.18 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1958 |
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Recommended Standards
- Dimethyl (1S,2S)-cyclobutane-1,2-dicarboxylate (CAS 61376-98-5)
- Dimethyl 3-Methylglutaconate (CAS 52313-87-8)
- dimethyl (1R,2R)-cyclobutane-1,2-dicarboxylate (CAS 79120-94-8)
- dimethyl cyclobutane-1,2-dicarboxylate (CAS 3396-20-1)
- tert-Butyl (2-(5-cyano-1H-indol-3-yl)ethyl)carbamate (CAS 144035-34-7)
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- 2-Chloroimidazo[1,2-a]pyridine-6-carbonitrile (CAS 1019020-03-1)
- Benzyl ((1-((S)-2-amino-3-methylbutanoyl)piperidin-3-yl)methyl)carbamate (CAS 1354025-15-2)
- 2-Chloro-4-fluorobenzenethiol (CAS 175277-99-3)
- 1-(Benzyloxy)-3-isocyanobenzene (CAS 1353562-25-0)
- Mianserin impurity 21 (CAS CATO-C4X-136921)
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