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  2. β-Amyloid (1-40), FAM-labeled

β-Amyloid (1-40), FAM-labeled 

Cat. No.: HY-P2550
Handling Instructions

β-Amyloid (1-40), FAM-labeled is a FAM fluorescently-labelled β-Amyloid (1-40) peptide (λex= 492 nm and λem= 518 nm).

For research use only. We do not sell to patients.

Custom Peptide Synthesis

β-Amyloid (1-40), FAM-labeled Chemical Structure

β-Amyloid (1-40), FAM-labeled Chemical Structure

CAS No. : 1678416-08-4

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β-Amyloid (1-40), FAM-labeled is a FAM fluorescently-labelled β-Amyloid (1-40) peptide (λex= 492 nm and λem= 518 nm)[1].

IC50 & Target

λex= 492 nm; λem= 518 nm

In Vitro

Apical-to-basolateral exchange across endothelial monolayer of fluorescent Aβ42 (FAM-labeled Human β-Amyloid (1-42) and Fluor488-labeled β-Amyloid (1-42)) or scramble Aβ42 (FAM-labeled scrambled β-Amyloid (1-42)) (1-100 μM) is monitored in transendothelial electrical resistance (TEER) during cell monolayer’s formation over time (over 120 min in presence or absence of Aβ24). Human β-Amyloid (1-24) (1 μM) results in H-Aβ42 retention, thus reducing its efflux through the BBB and therefore preventing an efficient mechanism of Aβ42 clearance[1].
The in vitro BBB model is used to investigate the passage of FAM-labeled or 488-conjugated H-Aβ42 across the endothelial cell monolayer. The addition of fluorescently labeled H-Aβ42 (FAM-labeled Human β-Amyloid (1-42) or Fluor 488-labeled β-Amyloid (1-42)) to the apical side of cell inserts results in effective BBB crossing, FAM-labeled scrambled β-Amyloid (1-42) is not efficiently transcytosed.

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Molecular Weight






Sequence Shortening



Room temperature in continental US; may vary elsewhere.


Please store the product under the recommended conditions in the Certificate of Analysis.

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