Crotonic Acid Impurity 1 (Butyl 3-Formyl-Crotonate) CAS 40212-97-3
| CAS No. | 40212-97-3 |
| Molecular Formula | C9H14O3 |
| Molecular Weight | 170.21 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 170.21 g/mol gives Crotonic Acid Impurity 1 (Butyl 3-Formyl-Crotonate) distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Crotonic Acid Impurity 1 (Butyl 3-Formyl-Crotonate) (CAS 40212-97-3) is a certified pharmaceutical impurity reference standard with the molecular formula C9H14O3 and a molecular weight of 170.21 g/mol.
The molecular framework of Crotonic Acid Impurity 1 (Butyl 3-Formyl-Crotonate) (C9H14O3) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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 supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
CATO manufactures Crotonic Acid Impurity 1 (Butyl 3-Formyl-Crotonate) under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C9H14O3 |
| Molecular Weight | 170.21 g/mol |
| Purity | >95% |
| 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.) | 1968 |
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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