Amyloid β-Protein (1-28) CAS 109770-29-8
| CAS No. | 109770-29-8 |
| Molecular Formula | C145H209N41O46 |
| Molecular Weight | 3262.50 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Amyloid β-Protein (1-28) (CAS 109770-29-8), a certified reference material (molecular formula C145H209N41O46, MW 3262.50 g/mol) for analytical method development and quality control.
Amyloid β-Protein (1-28) (C145H209N41O46) contains a nitrogen-containing heterocyclic scaffold, an amide 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. 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.
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.
Physical & Chemical Properties
| Molecular Formula | C145H209N41O46 |
| Molecular Weight | 3262.50 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 |
| Degree of Unsaturation (DBE) | 62.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Nitrogen Atoms | 41 |
Related Amyloid Standards
- (Gln11)-Amyloid β-Protein (1-28) (CAS 106686-61-7)
- (Pyr11)-Amyloid β-Protein (11-40) (CAS 192377-94-9)
- Amyloid β/A4 Protein Precursor770 (740-770) trifluoroacetate salt (CAS 1802086-24-3)
- Amyloid β/A4 Protein Precursor??? (135-155) (CAS 315229-44-8)
- (Pyr3)-Amyloid β-Protein (3-40) trifluoroacetate salt (CAS 161818-04-8)
- Amyloid β-Protein (17-40) ammonium (CAS 156790-69-1)
- Amyloid β-Protein (1-40) (mouse, rat) (CAS 144409-98-3)
- Gly-Amyloid b-Protein -Gly-e-aminocaproyl(-Lys)6 (H-3978.1000) (CAS 184951-46-0)
Recommended Standards
- H-Tyr-Thr-Ile-Trp-Met-Pro-Glu-Asn-Pro-Arg-Pro-Gly-Thr-Pro-Cys-Asp-Ile-Phe-Thr-Asn-Ser-Arg-Gly-Lys-Arg-Ala-Ser-Asn-Gly-OH (CAS CATO-CPTD788727)
- α-Synuclein (61-95) (human) (CAS 154040-19-4)
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- C-Peptide 1 (rat) (CAS 41475-27-8)
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- 2-(5-(Pyridin-3-yl)-1H-indol-3-yl)acetonitrile (CAS 1214355-71-1)
- 2-((Ethylthio)methyl)furan-3-carboxylic acid (CAS 1156132-95-4)
- trans-2-[3-(Trifluoromethyl)phenyl]cyclopropanamine Hydrochloride (CAS 1156491-11-0)
- 2-((3,5-Diamino-1H-pyrazol-4-yl)diazenyl)benzoic acid (CAS 899021-95-5)
- 2-(2-(p-Tolyl)-1,3-dioxolan-2-yl)acetaldehyde (CAS 75136-31-1)
- 1-(2-Phenoxyethyl)-1,3-dihydro-2H-benzo[d]imidazol-2-imine (CAS 325822-93-3)
- Pancreatic Polypeptide (31-36) Free Acid, human (CAS 192432-73-8)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com