Amyloid β-Protein (17-40) ammonium CAS 156790-69-1
| CAS No. | 156790-69-1 |
| Molecular Formula | C110H178N26O31S |
| Molecular Weight | 2392.85 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Amyloid β-Protein (17-40) ammonium (CAS 156790-69-1), molecular formula C110H178N26O31S and molecular weight 2392.85 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C110H178N26O31S, Amyloid β-Protein (17-40) ammonium contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 2392.85 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
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 | C110H178N26O31S |
| Molecular Weight | 2392.85 g/mol |
| Purity | >95% |
| 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) | 35.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2001 |
| Nitrogen Atoms | 26 |
| Sulfur Atoms | 1 |
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Recommended Standards
- (4S)-4-({[2-({[({2-[2-({[({[(1R,8S,9R)-bicyclo[6.1.0]non-4-yn-9-yl]methoxy}carbonyl)amino]sulfonyl}amino)ethoxy]ethoxy}carbonyl)amino]sulfonyl}[2-({[(1S)-3-carboxy-1-{[(1S)-1-{[(1S)-1-({4-[({[(10S,23S)-10-ethyl-18-fluoro-10-hydroxy-19-methyl-5,9-dioxo-8-oxa-4,15-diazahexacyclo[14.7.1.0²,¹⁴.0⁴,¹³.0⁶,¹¹.0²⁰,²⁴]tetracosa-1,6(11),12,14,16,18,20(24)-heptaen-23-yl]carbamoyl}oxy)methyl]phenyl}carbamoyl)ethyl]carbamoyl}-2-methylpropyl]carbamoyl}propyl]carbamoyl}oxy)ethyl]amino)ethoxy]carbonyl}amino)-4-{[(1S)-1-{[(1S)-1-({4-[({[(10S,23S)-10-ethyl-18-fluoro-10-hydroxy-19-methyl-5,9-dioxo-8-oxa-4,15-diazahexacyclo[14.7.1.0²,¹⁴.0⁴,¹³.0⁶,¹¹.0²⁰,²⁴]tetracosa-1,6(11),12,14,16,18,20(24)-heptaen-23-yl]carbamoyl}oxy)methyl]phenyl}carbamoyl)ethyl]carbamoyl}-2-methylpropyl]carbamoyl}butanoic acid (CAS 2765424-50-6)
- 4,4'-((4-(3-((1,25-Diamino-13-(3-((6-guanidinohexyl)amino)-3-oxopropyl)-1,25-diimino-10,16-dioxo-2,9,17,24-tetraazapentacosan-13-yl)amino)-3-oxopropyl)-4-(3-(pyridin-2-yldisulfaneyl)propanamido)heptanedioyl)bis(azanediyl))bis(N1,N7-bis(6-guanidinohexyl)-4-(3-((6-guanidinohexyl)amino)-3-oxopropyl)heptanediamide) (CAS 1103518-95-1)
- LQEQ-19 (mouse, rat) (CAS 322644-72-4)
- FITC-εAhx-HHV-2 Envelope Glycoprotein G (561-578) (CAS 2022956-64-3)
- Retinoyl Chloride (CAS 53839-60-4)
- 52392-73-1 3,4-diphenyl-1,2-oxazol-5-amine DTXSID20359921 (CAS 52392-73-1)
- N-(4-Chlorophenyl)-4,5-dihydro-1H-imidazol-2-amine (CAS 1848-73-3)
- 3-((3-Fluorophenyl)amino)cyclohex-2-en-1-one (CAS 191089-80-2)
- 627-75-8 AW80YGD17D Arginine hydrochloride, D- D-Arginine hydrochloride D-Arginine, monohydrochloride D-Arginine, hydrochloride (1:1) Arginine, monohydrochloride, D- EINECS 211-010-1 NSC 46710 UNII-AW80YGD17D (CAS 627-75-8)
- N-methyl-1-pyrimidin-5-yl-methanamine;dihydrochloride (CAS 1955523-79-1)
- 2-(4-(2,2-Dicyanovinyl)-2-methoxyphenoxy)-N-(3,4-dimethylphenyl)acetamide (CAS 499986-38-8)
- 3-(4-Methoxyphenyl)cyclohexane-1-carboxylic acid (CAS 30448-76-1)
- IB-OSu (CAS 112913-62-9)
- Semaglutide Impurity 138 (CAS CATO-C4X-2226138)
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