1,2-Bis[(2S,5S)-2,5-dimethylphospholano]benzene(cyclooctadiene)rhodium(I) trifluoromethanesulfonate CAS 136705-75-4
| CAS No. | 136705-75-4 |
| Molecular Formula | C18H28P2Rh |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 1,2-Bis[(2S,5S)-2,5-dimethylphospholano]benzene(cyclooctadiene)rhodium(I) trifluoromethanesulfonate (C18H28P2RhCF3O3SC8H12) is characterized by a steroid core, a sulfone group, a phosphonate group, a hydroxyl group, an ether linkage, fluorine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
1,2-Bis[(2S,5S)-2,5-dimethylphospholano]benzene(cyclooctadiene)rhodium(I) trifluoromethanesulfonate (CAS 136705-75-4), molecular formula C18H28P2RhCF3O3SC8H12 and molecular weight 666.53 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C18H28P2Rh CF3O3S C8H12 |
| Molecular Weight | 666.53 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| 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) | 6.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | F-containing |
| Sulfur Atoms | 1 |
Recommended Standards
- 4-Methoxy-2-nitro-benzylamine hydrochloride (CAS 67567-35-5)
- 18,19-Dimethoxy-4,5,7,9,13-pentaazapentacyclo[11.8.0.0^{3,11}.0^{4,8}.0^{16,21}]henicosa-3(11),5,7,9,16(21),17,19-heptaen-12-one (CAS 861209-59-8)
- Ethyl [(5-chloro-1,3-benzoxazol-2-yl)thio]acetate (CAS 84829-54-9)
- 2-Hydroxy-4-(perfluoroethyl)pyrimidine-5-carboxylic acid (CAS 306960-69-0)
- 6-Chloro-2-(difluoromethyl)-5-methylpyridine-3-sulfonamide (CAS 1806870-57-4)
- 3-(Aminomethyl)-4-fluorobenzoyl chloride (CAS 771573-07-0)
- 1-Propanaminium, N,N,N,2,2-pentamethyl-3-[(1-oxo-2-propen-1-yl)amino]-, chloride , polymer with 2-propenamide and N,N,N-trimethyl-2-[(2-methyl-1-oxo-2-propen-1-yl)oxy]ethanaminium chloride (CAS 75150-28-6)
- 2-(N-(1,1-Dihydroperfluorotridecylsulfonyl)-N-methylamino)ethyl acrylate (CAS 66008-67-1)
- (S)-4-(2-(Hydroxymethyl)pyrrolidin-1-yl)-2-methylquinazolin-7-ol (CAS 646450-67-1)
- Semaglutide impurity 205 (CAS CATO-C4X-2226205)
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