| CAS No. | 39918-12-2 |
| Molecular Formula | C7H8O2 |
| Molecular Weight | 124.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 124.14 g/mol gives methyl trans-2-ethynylcyclopropane-1-carboxylate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
methyl trans-2-ethynylcyclopropane-1-carboxylate (CAS 39918-12-2), molecular formula C7H8O2 and molecular weight 124.14 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, methyl trans-2-ethynylcyclopropane-1-carboxylate (C7H8O2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 124.14 g/mol, it falls into the low-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).
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.
As a certified reference material (CRM), methyl trans-2-ethynylcyclopropane-1-carboxylate 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.
| Molecular Formula | C7H8O2 |
| Molecular Weight | 124.14 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1968 |