Rac-2-[(1r,2r)-2-(3-chlorophenyl)cyclopropyl]-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, trans CAS 1953178-19-2
| CAS No. | 1953178-19-2 |
| Molecular Formula | C15H20BClO2 |
| Molecular Weight | 278.58 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Rac-2-[(1r,2r)-2-(3-chlorophenyl)cyclopropyl]-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, trans (C15H20BClO2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, 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 278.58 g/mol, it falls into the medium-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).
Rac-2-[(1r,2r)-2-(3-chlorophenyl)cyclopropyl]-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, trans (CAS 1953178-19-2) is a high-purity analytical reference standard with the molecular formula C15H20BClO2 and a molecular weight of 278.58 g/mol.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Rac-2-[(1r,2r)-2-(3-chlorophenyl)cyclopropyl]-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, trans 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.
Physical & Chemical Properties
| Molecular Formula | C15H20BClO2 |
| Molecular Weight | 278.58 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | Cl-containing |
Recommended Standards
- 1-(3-Chloro-5-(trifluoromethyl)phenyl)-2,2,2-trifluoroethan-1-ol (CAS 1545125-30-1)
- (E)-2-(2-(4-Chlorophenyl)prop-1-en-1-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 2306036-57-5)
- 2-(5-Chloro-2-cyclopropylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1486485-28-2)
- (E)-2-(3-Chloro-2-methylstyryl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 2171558-74-8)
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- Semaglutide impurity 75 (CAS CATO-C4X-222675)
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