(Ala1·3·11·1?)-Endothelin-1 CAS 121204-87-3

Description

Compared with other compounds in its class, the molecular weight of 2367.71 g/mol gives (Ala1·3·11·1?)-Endothelin-1 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

(Ala1·3·11·1?)-Endothelin-1 (CAS 121204-87-3), molecular formula C109H163N25O32S and molecular weight 2367.71 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, (Ala1·3·11·1?)-Endothelin-1 is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 2367.71 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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.

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

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