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API

Ampicillin Trihydrate

Ampicillin Trihydrate is listed in the Vencilla catalogue as an active pharmaceutical ingredient for business-to-business sourcing enquiries. It is a hydrate of ampicillin. Molecular formula C16H25N3O7S; molecular weight 403.5 g/mol (PubChem CID 23565). Share the required grade, specification, quantity, documentation and destination market with your enquiry.

Product overview

Product type
API
Type
API
Vencilla ID
PRD-100052

Chemical identity

CAS number
7177-48-2
Molecular formula
C16H25N3O7S
Molecular weight
403.5 g/mol
Synonyms
Ampicillin hydrate; Ampicillin (trihydrate); ampicilline trihydrate
Substance form
Hydrate
Active moiety
Ampicillin (C16H19N3O4S, 349.4 g/mol)
IUPAC name
(2S,5R,6R)-6-[[(2R)-2-amino-2-phenylacetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid;trihydrate
PubChem CID
23565 (opens PubChem in a new tab)
InChIKey
RXDALBZNGVATNY-CWLIKTDRSA-N

Reference properties

Physical description
Ampicillin trihydrate is an odorless white microcrystalline powder with a bitter taste. A 0.25% solution in water has a pH of 3.5 to 5.5. (NTP, 1992) (CAMEO Chemicals, US NOAA)
Melting point
388 to 392 °F (decomposes) (NTP, 1992) (CAMEO Chemicals, US NOAA)
Solubility
1 to 10 mg/mL at 70 °F (NTP, 1992) (CAMEO Chemicals, US NOAA)

Published literature values for the substance, with their source. They are not a specification of supplied material; the specification for each supply is confirmed with the enquiry.

Technical specification

Product specifications (salt or form, grade and pack) are confirmed for each enquiry during qualification.

References

Reference information researched 2026-10-14.

Documentation

Documentation requirements are reviewed for each enquiry during qualification.

Market compliance

Regulatory, import and registration requirements depend on the destination market and the intended use, and are reviewed for each enquiry. This record does not indicate approval, registration or authorisation in any market.

Pharmaceutical sourcing disclaimer

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