L-threo-Phenylserine CAS 6254-48-4
| CAS No. | 6254-48-4 |
| Molecular Formula | C9H11NO3 |
| Molecular Weight | 181.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
L-threo-Phenylserine (CAS 6254-48-4), molecular formula C9H11NO3 and molecular weight 181.19 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C9H11NO3, L-threo-Phenylserine contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 181.19 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), L-threo-Phenylserine 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 | C9H11NO3 |
| Molecular Weight | 181.19 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 1 |
Related L Standards
- D-threo- β-Phenylserine (CAS 109120-55-0)
- DL-threo-4-Fluoroglutamine (CAS 238418-69-4)
- DL-threo-4-Fluoroisoglutamine (CAS 261623-81-8)
- (±)-threo-3-Methylglutamic acid (CAS 63088-04-0)
- L-(+)-Threo-2-(N,N-dimethylamino)-1-(4-aminophenyl)-1,3-propanediol (CAS 129170-43-0)
- D-(-)-THREO-2-AMINO-1-(4-NITROPHENYL)-1,3-PROPANEDIOL98% (CAS 3689-55-2)
- D-(-)-threo-2-Amino-1-(4-nitrophenyl)-1,3-propanediol (CAS 716-61-0)
- threo-Guaiacylglycerol (CAS 27391-16-8)
Recommended Standards
- Methyl 5-amino-2-methoxybenzoate (CAS 22802-67-1)
- 1-Cyclohexyl-2,2,2-trifluoroethan-1-amine (CAS 1078726-20-1)
- Ethyl-N-(3-Hydroxyphenyl)-Carbamate (CAS 7159-96-8)
- 2-(3-Amino-1h-1,2,4-triazol-1-yl)-N-cyclopropylacetamide (CAS 1178807-64-1)
- Aniline-1-<SUP>13</SUP>C (CAS 18960-62-8)
- Digeranyl bisphosphonate (CAS CATO-C3D-263273)
- Dapsone Impurity 23 (CAS 34262-29-8)
- 2-3-4-Tri-O-acetyl-1-6-anhydro-β-D-galactopyranose (CAS 4132-24-5)
- 1H-pyrazolo[4,3-c]pyridine-6-carboxylic acid, 1-acetyl-, methyl ester (CAS 1385015-89-3)
- 4-amino-3-fluorobenzoyl chloride (CAS 503315-76-2)
- 1-(4-(3-Bromopropoxy)phenyl)ethan-1-one (CAS 65623-98-5)
- 2-(Methoxymethyl)-1-pyrrolidinesulfonyl chloride (CAS 1308384-40-8)
- 1-(2-Bromo-6-fluoro-3-nitrophenyl)ethanone (CAS 1807192-37-5)
- D-Ser12-Semaglutide (CAS CATO-C4X-2226240)
Why CATO?
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