Ampicillin
C16H19N3O4S (anhydrous)
349.41
4-Thia-1-azabicyclo[3.2.0]heptane-2 carboxylic acid, [6-(aminophenylacetyl)amino]-3,3-dimethyl-7-oxo-, [2S-[2α,5α,6β(S*)]]-;
(2S,5R,6R)-6-[(R)-2-Amino-2-phenylacetamido]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid
[69-53-4] Trihydrate 403.46
[7177-48-2]
4-Thia-1-azabicyclo[3.2.0]heptane-2 carboxylic acid, [6-(aminophenylacetyl)amino]-3,3-dimethyl-7-oxo-, [2S-[2α,5α,6β(S*)]]-;
(2S,5R,6R)-6-[(R)-2-Amino-2-phenylacetamido]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid
[69-53-4] Trihydrate 403.46
[7177-48-2]
DEFINITION
Ampicillin is anhydrous or contains three molecules of water of hydration. It contains NLT 900 µg/mg and NMT 1050 µg/mg of ampicillin (C16H19N3O4S), calculated on the anhydrous basis.
USP REFERENCE STANDARDS FOR PURCHASE
USP Amoxicillin RSUSP Amoxicillin Related Compound A RS
USP Ampicillin RS
USP Ampicillin System Suitability Mixture RS
USP Ampicillin Trihydrate RS