Description
Octreotide Acetate Injection, a cyclic octapeptide prepared as a clear sterile solution of octreotide, acetate salt, in a buffered lactic acid solution for administration by deep subcutaneous (intrafat) or intravenous injection. Octreotide acetate, known chemically as D-phenylalanyl-L-cysteinyl-L-phenylalanyl-D-tryptophyl-L-lysyl-L-threonyl-N-[(1R,2R)-2-hydroxy-1-(hydroxymethyl)propyl]-L-cysteinamide cyclic (2→7)-disulfide acetate (salt), is a long-acting octapeptide with pharmacologic actions mimicking those of the natural hormone somatostatin.
Octreotide Acetate Injection is available as sterile 1 mL vials in 3 strengths, each mL containing 50, 100, or 500 mcg of octreotide (as acetate) as the active and the following inactive ingredients: L-lactic acid 3 mg, sodium chloride 7 mg, sodium hydroxide, and water for injection, q.s.
Octreotide Acetate Injection is also available as sterile 5 mL multiple dose vials in 2 strengths, each mL containing 200 or 1,000 mcg of octreotide (as acetate) as the active and the following inactive ingredients: L-lactic acid 3 mg, sodium chloride 7 mg, sodium hydroxide, and water for injection, q.s. Phenol 5 mg has been added as a preservative.
L-Lactic acid and sodium hydroxide are added to provide a buffered solution, pH range 3.9 to 4.5.
The molecular weight of octreotide acetate is 1019.3 (free peptide, C49H66N10O10S2) and its amino acid sequence is: