Ampicillin: beta-lactam antibiotic (aminopenicillin).
Ampicillin testing at Vanguard Laboratory: identity, purity and quantity $250 per sample, with results in 3 to 5 business days.
Ampicillin: 2D structure drawn from the PubChem record (CID 6249).
69-53-4
C16H19N3O4S
349.41 g/mol
Beta-lactam antibiotic (aminopenicillin)
Identity: Ampicillin (anhydrous)
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
Method for the $250 identity, purity and quantity test: HPLC-UV purity and assay, LC-MS identity, against a reference standard, with results in 3 to 5 business days.
The USP monograph covers identity by infrared spectroscopy, assay by HPLC, related compounds by HPLC and a dimethylaniline limit by GC, and sterility, bacterial endotoxins, pH and water. Full testing to the USP Ampicillin monograph is available and quoted.
Chromatographic purity and mg per unit by the method matched to the compound, identity against a reference standard. 1 unit.
| Add-on test | Price |
|---|---|
| Identity and impurities | |
| FTIR identity | $90 |
| CHNS elemental analysis (carbon, hydrogen, nitrogen, sulfur) | $125 |
| Chiral purity (where a chiral method exists; new methods quoted) | $250 |
| Water, solvents and salt form | |
| Water content by Karl Fischer | $60 |
| Residual solvents | $150 |
| Counterions: chloride, acetate and TFA | $70 |
| Assay | |
| Assay, % w/w (with raw powder purity; $250 together) | +$50 |
| Metals and conformity | |
| Heavy metals: arsenic, cadmium, chromium, mercury and lead | $150 |
| Conformity: purity and quantity on more units from the same lot | $100 per extra unit |
| Microbiology (injectables) | |
| Endotoxin | $210 |
| Sterility or bioburden | $150 |
| Container closure integrity (CCI) | $50 |
| Screening | |
| Fentanyl screen | $50 |
10% off for 10 or more samples.
Need something else? Other tests are available on request.
Purity and quantity is $250 per sample (1 unit) and raw powder purity is $200 for 50 mg, with results in 3 to 5 business days. Send the material sealed and labeled, with the label claim and the form it contains.
No. The $250 test covers identity, purity and quantity by HPLC with UV detection for purity and assay, and LC-MS for identity. Full testing to the USP Ampicillin monograph is available and quoted.
Yes. The trihydrate is about 13 percent water by weight, so the same powder reads differently on an anhydrous basis. Results are reported on the basis you name.
The beta-lactam ring opens with water and heat to form penicilloic acids, and ampicillin can also form dimers and higher polymers. These show up as separate peaks on the HPLC purity run.
The ampicillin part is measured the same way, but ampicillin sodium is more hygroscopic and less stable once exposed to moisture. Keep samples sealed and dry before shipping.
https://pubchem.ncbi.nlm.nih.gov/compound/6249
Identity facts from the USP monograph header for this compound.
Start an order online, or send the compound name and the tests you need for a quote.
