2-Ethyl-2-methylsuccinic Acid,
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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)
C7H12O4 160.17-White crystals.
Assay: Transfer about 80 mg, accurately weighed, to a suitable beaker, add 30 mL of methanol, and dissolve by stirring. Slowly add 40 mL of deionized water.
[NOTE-If cloudiness appears when adding the deionized water, dissolve in 50 mL of methanol only.]
When solution is complete, titrate with 0.1 N sodium hydroxide VS, determining the endpoint potentiometrically. Perform a blank titration, and make any necessary correction. Each mL of 0.1 N sodium hydroxide is equivalent to 16.02 mg of C7H12O4. Not less than 98.5% of C7H12O4 is found.
MELTING POINT (741); between 101° and 103°.
