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| ECHA InfoCard | 100.047.442 |
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| Formula | C99H155N29O21S |
| Molar mass | 2119.57 g·mol−1 |
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Alsactide (INN; brand name Synchrodyn 1-17 or simply Synchrodyn; former development code Hoechst 433; also known as alisactide) is a synthetic peptide and analogue of adrenocorticotropic hormone (ACTH) which is used in Italy as a diagnostic agent in kidney function for adrenal insufficiency. [1] [2] [3] Like ACTH, alsactide is thought to act as a non-selective agonist of the melanocortin receptors, including the ACTH receptor (MC2R). [4] However, it appears to show a different profile of receptor selectivity relative to ACTH, as it apparently demonstrated no evidence of inhibition of endogenous ACTH in Addison's disease patients. [5]