(S)-tyrosine benzyl ester HCl CAS 52142-01-5
| CAS No. | 52142-01-5 |
| Molecular Formula | C23H23NO3 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 397.90 g/mol gives (S)-tyrosine benzyl ester HCl distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies (S)-tyrosine benzyl ester HCl (CAS 52142-01-5), a certified reference material (molecular formula C23H23NO3HCl, MW 397.90 g/mol) for analytical method development and quality control.
The molecular framework of (S)-tyrosine benzyl ester HCl (C23H23NO3HCl) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
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 | C23H23NO3 HCl |
| Molecular Weight | 397.90 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1971 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related S Standards
- L-Tyrosine Methyl Ester (CAS 1080-06-4)
- L-Tyrosine, N-[(1,1-dimethylethoxy)carbonyl]-O-[(trifluoromethyl)sulfonyl]-, methyl ester (CAS 112766-18-4)
- Tyrosine disodium salt dihydrate (CAS 122666-87-9)
- D-Tyrosine, 2-iodo- (CAS 1241675-93-3)
- L-Tyrosine-α,β,β,2,3,5,6-d7 (CAS 130551-49-4)
- L-Tyrosine, O-[(4-methylphenyl)sulfonyl]- (CAS 13504-89-7)
- D-Tyrosine, N-[(1,1-dimethylethoxy)carbonyl]-2-iodo- (CAS 1391385-17-3)
- D-Tyrosine, N-[(9H-fluoren-9-ylmethoxy)carbonyl]-2-iodo- (CAS 1391567-02-4)
Recommended Standards
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- 2-Amino-4-methyl-3-nitropyridine (CAS 6635-86-5)
- (S)-tert-Butyl (1-(methoxy(methyl)amino)-1-oxopropan-2-yl)(methyl)carbamate (CAS 170097-58-2)
- 9-Chloro-1-methyl-5,6,7,8-tetrahydro-1h-pyrazolo[4,3-b]quinoline (CAS 938001-63-9)
- 2-{1-[5-(aminomethyl)pyridin-2-yl]piperidin-2-yl}ethan-1-ol (CAS 954572-56-6)
- 3-[(4-Benzoylpiperazin-1-yl)sulfonyl]benzoic acid (CAS 447411-92-9)
- 3-(Dimethoxymethyl)-2-fluorobenzaldehyde (CAS 1820705-34-7)
- N-(2-Methoxybenzyl)-3,4-dihydro-2H-pyrrol-5-amine (CAS 753464-98-1)
- Tirzepatide(sodium salt) (CAS 2023788-19-2(free base))
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