(11β)-11,21-Dihydroxy-3,20-dioxopregn-4-en-18-al-d7; 11β,21-Dihydroxypregn-4-ene-3,18,20-trione-d7; 18-Formyl-11β,21-dihydroxy|-4-pregnene-3,20-dione-d7; 18-Oxocorticosterone-d7; Aldocortene-d7; Electrocortin-d7; Elektrocortin-d7; NSC 73856-d7; Reichstein X-d7;

A labeled adrenocortical steroid which exerts regulatory influence on metabolism of electrolytes and water. Biologically active aldosterone isomer; a mineralocorticoid produced by the adrenal cortex that induces urinary excretion of K+ and renal reabsorptioon of Na+. Exists as an equilibrium mixture of the aldehyde and the hemiacetal.