Tosyl-L-tryptophan CAS 67850-42-4
| CAS No. | 67850-42-4 |
| Molecular Formula | C18H18N2O4S |
| Molecular Weight | 358.41 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Tosyl-L-tryptophan (CAS 67850-42-4), a certified reference material (molecular formula C18H18N2O4S, MW 358.41 g/mol) for analytical method development and quality control.
Tosyl-L-tryptophan (C18H18N2O4S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), Tosyl-L-tryptophan 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 | C18H18N2O4S |
| Molecular Weight | 358.41 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°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 |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Tosyl Standards
- N-Tosyl-L-alanyloxyindole (CAS 75062-54-3)
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- N-(1-Tosyl-1,2,3,4-tetrahydroquinolin-6-yl)propionamide (CAS 899751-69-0)
- 1-Benzyl-6-tosyl-1,6-diazaspiro[3.3]Heptan-3-amine (CAS 1349199-73-0)
- 8-Methyl-7-tosyl-[1,3]dioxolo[4,5-g]quinolin-6(5H)-one (CAS 933196-42-0)
- 1-Benzyl-6-tosyl-1,6-diazaspiro[3.3]Heptan-2-one (CAS 1263296-91-8)
- 1-Benzyl-6-tosyl-1,6-diazaspiro[3.3]Heptan-3-one (CAS 1349199-71-8)
- N-(2-(1-Tosyl-1H-indol-3-yl)ethyl)acetamide (CAS 919787-20-5)
Recommended Standards
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- Capecitabine Impurity 32 (CAS CATO-C4X-102432)
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- 2-(1-methyl-4-sulfamoyl-1H-pyrrol-2-yl)acetic acid (CAS 1803592-62-2)
- 1-(1-Methylazetidin-3-yl)ethan-1-ol (CAS 1313738-61-2)
- 2-(4-Bromo-2-methylphenoxy)-N-(naphthalen-1-yl)acetamide (CAS 434310-11-9)
- 2,6-Dimethoxy-5-(methylthio)pyrimidin-4-amine (CAS 89587-78-0)
- 9-Cyclopropyl-6-fluoro-8-methoxy-7-((4-methoxybenzyl)amino)isothiazolo[5,4-b]quinoline-3,4(2H,9H)-dione (CAS 936255-65-1)
- Allyl 2-amino-5-iodobenzoate (CAS 1131605-37-2)
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- Sofalcone (CAS 64506-49-6)
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