125305-20-6 2-(2,2-Dimethyl-1-oxopropoxy)benzoic Acid Ethyl Ester 2-O-tert-Butoxycarbonyl-benzoic Acid Ethyl Ester CAS 125305-20-6
| CAS No. | 125305-20-6 |
| Molecular Formula | C21H23ClFN3O3 |
| Molecular Weight | 419.88 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 125305-20-6 2-(2,2-Dimethyl-1-oxopropoxy)benzoic Acid Ethyl Ester 2-O-tert-Butoxycarbonyl-benzoic Acid Ethyl Ester (CAS 125305-20-6), a certified reference material (molecular formula C21H23ClFN3O3, MW 419.88 g/mol) for analytical method development and quality control.
The molecular framework of 125305-20-6 2-(2,2-Dimethyl-1-oxopropoxy)benzoic Acid Ethyl Ester 2-O-tert-Butoxycarbonyl-benzoic Acid Ethyl Ester (C21H23ClFN3O3) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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), 125305-20-6 2-(2,2-Dimethyl-1-oxopropoxy)benzoic Acid Ethyl Ester 2-O-tert-Butoxycarbonyl-benzoic Acid Ethyl Ester 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 | C21H23ClFN3O3 |
| Molecular Weight | 419.88 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1992 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 3 |
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Recommended Standards
- 2N-765 3-chloro-5-(trifluoromethyl)-2-({4-[(2,4,6-trimethylphenyl)methoxy]phenyl}methyl)pyridine 338402-27-0 (CAS 338402-27-0)
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- 5-{[(2-chloro-6-fluorophenyl)methyl]sulfanyl}-8,9-dimethoxy-2H,3H-imidazo[1,2-c]quinazolin-2-one (CAS 672949-33-6)
- 2-Chloro-N-(1-((R)-2,3-dihydroxypropyl)-2-oxo-1,2,3,4-tetrahydroquinolin-3-yl)-6H-thieno[2,3-b]pyrrole-5-carboxamide (CAS 918902-32-6)
- N-(5-Carboxypentyl)maleamic acid (CAS 57079-14-8)
- 2-(Difluoromethyl)-6-fluoro-4-methoxy-3-nitropyridine (CAS 1805439-25-1)
- 4-Allyl-2-ethoxy-1-fluorobenzene (CAS 1378821-94-3)
- 1-(3-Bromo-2-pyridinyl)-3-pyrrolidinol (CAS 1289009-46-6)
- (E)-3-((4-chlorophenyl)amino)-1-(4-methyl-2-(pyridin-3-yl)thiazol-5-yl)prop-2-en-1-one (CAS 478041-30-4)
- Ethyl 5-bromo-1-(4-chlorophenyl)-1H-pyrazole-4-carboxylate (CAS 110821-40-4)
- (R)-2-(1-aminoethyl)benzoic acid (CAS 1187930-78-4)
- Fluorofenidone Impurity 2 (CAS 1107650-68-9)
- 3-Hydroxy-6,7-dimethoxyisobenzofuran-1(3H)-one (CAS 479-87-8)
- Tirzepatide-d7 Ditrifluoroacetate (CAS CATO-CPTD788698)
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