Tau Peptide (244-274) (Repeat 1 Domain) trifluoroacetate salt CAS 330456-24-1
| CAS No. | 330456-24-1 |
| Molecular Formula | C141H238N42O44S |
| 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 3371.79 g/mol gives Tau Peptide (244-274) (Repeat 1 Domain) trifluoroacetate salt distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Tau Peptide (244-274) (Repeat 1 Domain) trifluoroacetate salt (CAS 330456-24-1), molecular formula C141H238N42O44SC2HF3O2 and molecular weight 3371.79 g/mol, is a CATO reference standard with documented purity and traceability.
Tau Peptide (244-274) (Repeat 1 Domain) trifluoroacetate salt (C141H238N42O44SC2HF3O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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), Tau Peptide (244-274) (Repeat 1 Domain) trifluoroacetate salt 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 | C141H238N42O44S C2HF3O2 |
| Molecular Weight | 3371.79 g/mol |
| 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) | 44.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 42 |
| Sulfur Atoms | 1 |
Related Tau Standards
- Tau Peptide (306-317) trifluoroacetate salt (CAS 1003007-59-7)
- Peptide Impurity 82 (CAS 10491-78-8)
- Peptide T (CAS 106362-32-7)
- Peptide WE-14 (CAS 115136-18-0)
- Peptide YY (human) trifluoroacetate salt (CAS 118997-30-1)
- Peptide Impurity 15 (CAS 1227750-69-7)
- Peptide YY (3-36) (human) (CAS 123583-37-9)
- Tau Peptide (379-408) trifluoroacetate salt (CAS 1246357-53-8)
Recommended Standards
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- (R)-3-(4-(benzyloxy)phenyl)-2-((tert-butoxycarbonyl)(methyl)amino)propanoic acid (CAS 138774-98-8)
- 2-[4-[2-(4,5-Dihydro-4,4-dimethyl-2-oxazolyl)-1-naphthalenyl]phenyl]-4,5-dihydro-4,4-dimethyloxazole (CAS 85678-98-4)
- rel-(1R,5S,6S)-tert-Butyl 5-hydroxy-7-oxa-3-azabicyclo[4.1.0]heptane-3-carboxylate (CAS 1997369-98-8)
- N-(3-bromophenyl)-3-chloropropanamide (CAS 519016-88-7)
- Tirzepatide Impurity 61 (CAS CATO-C4X-324061)
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