Aminopentamide Sulfate
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This article is compiled based on the United States Pharmacopeia (USP) – 2025 Edition
Issued and maintained by the United States Pharmacopeial Convention (USP)
C19H24N2O · H2SO4 394.49
α-[2-(Dimethylamino)propyl]-α-phenylbenzeneacetamide sulfate CAS RN®: 60-46-8; UNII: IP1B47L61M.
» Aminopentamide Sulfate contains not less than 95.0 percent and not more than 103.0 percent of C19H24N2O · H2SO4.
Packaging and storage—Preserve in tight containers, and store at controlled room temperature.
Labeling—Label it to indicate that it is for veterinary use only.
USP Reference standards 〈11〉—
USP Aminopentamide Sulfate RS
Clarity and color of solution—Dissolve 0.5 g in 10 mL of water: the solution is clear and colorless.
Identification—
A: Spectroscopic Identification Tests 〈197〉, Infrared Spectroscopy: 197K
B: It meets the requirements of the tests for Sulfate 〈191〉.
Melting range 〈741〉: between 179° and 186°.
pH 〈791〉: between 1.2 and 3.0, in a solution (2.5 in 100).
Loss on drying 〈731〉: Dry it at 105° for 4 hours: it loses not more than 4.4% of its weight.
Residue on ignition 〈281〉: not more than 0.5%.
Assay—Dissolve about 500 mg of Aminopentamide Sulfate, accurately weighed, in 100 mL of dimethylformamide in a suitable container. Add 5 drops of thymol blue TS, and titrate with 0.1 N lithium methoxide VS in toluene to a deep blue endpoint. Perform a blank determination, and make any necessary correction. Each mL of 0.1 N lithium methoxide is equivalent to 19.72 mg of C19H24N2O · H2SO4. (USP 1-Dec-2024)
