5-Hydroxy L-Tryptophan Methyl Ester CAS 60971-91-7
| CAS No. | 60971-91-7 |
| Molecular Formula | C12H14N2O3 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
5-Hydroxy L-Tryptophan Methyl Ester (CAS 60971-91-7), molecular formula C12H14N2O3HCl and molecular weight 270.71 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5-Hydroxy L-Tryptophan Methyl Ester (C12H14N2O3HCl) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 270.71 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C12H14N2O3 HCl |
| Molecular Weight | 270.71 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1974 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
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Recommended Standards
- 10-(4-Chlorophenyl)-7-[(E)-2-phenylethenyl]-4-thia-6,10-diazatricyclo[6.3.0.0^{2,6}]undecane-9,11-dione (CAS 321522-01-4)
- 1-(Butylamino)-4-hydroxyanthracene-9,10-dione (CAS 63768-01-4)
- 4-(2-(4-Methoxyphenyl)quinolin-4-yl)morpholine hydrobromide (CAS 853349-71-0)
- 4-Bromo-2-fluoro-5-methylpyridine (CAS 1227577-02-7)
- 3-Chloro-6-[(3-methylphenyl)methyl]pyridazine (CAS 339008-38-7)
- 4-[(2,4-Dichlorophenyl)methyl]thiomorpholine-3,5-dione (CAS 338953-59-6)
- PD-160725 2-hydroxyethanesulfonate (CAS 186268-11-1)
- methyl 3-amino-2-chlorobenzoate hydrochloride (CAS 53553-15-4)
- 4-(4-Fluorobenzylidene)-2-phenyloxazol-5(4H)-one (CAS 449-81-0)
- Insulin Lispro (CAS 133107-64-9)
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