β-Amyloid (1-42), Rat Sequence (one letter code) DAEFGHDSGFEVRHQKLVFFAEDVGSNKGAIIGLMVGGVVIA Sequence (three letter code) Asp-Ala-Glu-Phe-Arg-His-Asp-Ser-Gly-Tyr-Glu-Val-His-His-Gln-Lys-Leu-Val-Phe-Phe- Ala-Glu-Asp-Val-Gly-Ser-Asn-Lys-Gly-Ala-Ile-Ile-Gly-Leu-Met-Val-Gly-Gly-Val-Val-Ile-Ala Formula C203H311N55O60S1 Cas No. Purity >90%,>95%,>98% Molecular weight 4418.1