Tau Peptide (379-408) trifluoroacetate salt CAS 1246357-53-8
| CAS No. | 1246357-53-8 |
| Molecular Formula | C140H228N44O46 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Tau Peptide (379-408) 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.
Tau Peptide (379-408) trifluoroacetate salt (CAS 1246357-53-8), molecular formula C140H228N44O46C2HF3O2 and molecular weight 3377.65 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Tau Peptide (379-408) trifluoroacetate salt (C140H228N44O46C2HF3O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 49.0, corresponding to approximately 49 ring(s) or double-bond equivalent(s). With a molecular weight of 3377.65 g/mol, it falls into the high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
Physical & Chemical Properties
| Molecular Formula | C140H228N44O46 C2HF3O2 |
| Molecular Weight | 3377.65 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) | 49.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 44 |
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)
- Peptide YY (3-36) (canine, mouse, porcine, rat) trifluoroacetate salt (CAS 126339-09-1)
Recommended Standards
- Ethyl 3-[5-bromo-2-(difluoromethoxy)phenyl]propanoate (CAS 1057674-78-8)
- (4-Chloro-2-ethoxyphenyl)methanamine hydrochloride (CAS 1354950-17-6)
- Methyl 4-ethoxythiophene-3-carboxylate (CAS 1823338-68-6)
- 1-Azido-4-bromobutane (CAS 116114-55-7)
- Hexadec-15-enoic acid (CAS 4675-57-4)
- 4-(Trimethylsilyl)benzoic Acid (CAS 15290-29-6)
- Artemisinin Impurity 9 (CAS CATO-C4X-20129)
- 2-methyl-2H-indazole-4-carbonitrile (CAS 1159511-45-1)
- 3-(2-Ethoxyethyl)-4-ethyl-1-methyl-1h-pyrazol-5-amine (CAS 1156894-75-5)
- (Pro3)-Gastric Inhibitory Polypeptide (human) trifluoroacetate salt (CAS 299898-52-5)
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