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A9518 Sigma-Aldrich

Ampicillin sodium salt

Synonym: D-(−)-α-Aminobenzylpenicillin sodium salt

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Properties

Related Categories A - K, Antibacterial, Antibiotics, Antibiotics A to Z, Antibiotics A-F,
InChI Key   KLOHDWPABZXLGI-YWUHCJSESA-M
form   powder
color   white with slight yellow cast
mp   215 °C (dec.)(lit.)
solubility   H2O: soluble50 mg/mL
Featured Industry   Agriculture
Mode of action   cell wall synthesis | interferes
antibiotic activity spectrum   Gram-negative bacteria
  Gram-positive bacteria
storage temp.   2-8°C

Description

Frequently Asked Questions

Frequently Asked Questions are available for this Product.

Application

Used to select for ampicillin resistance in mutated and transformed cells.

Biochem/physiol Actions

Mode of Action: This is a ß-lactam antibiotic that inhibits bacterial cell-wall synthesis by inactivating transpeptidases on the inner surface of the bacterial cell membrane.

Mode of Resistance: Administration with ß-lactamase cleaves the ß-lactam ring of Ampicillin and inactivates it.

Antimicrobial Spectrum: Includes both gram-positive (similar to benzylpenicillin) and gram-negative bacteria (similar to tetracyclines and chloramphenicol.

Caution

This product has been reported stable as supplied at 25°C at 43% and 81% relative humidity for six weeks. Additional studies have shown that the stability of Ampicillin in solution is a function of pH, temperature and the identity of the buffer. It′s activity is quickly lost when stored above pH 7. Optimal storage conditions are suggested as 2-8°C, and pH 3.8-5 where its activity was retained at 90%+ for a week.

Packaging

5, 25, 100 g in poly bottle

Preparation Note

Ampicillin is reported as slightly soluble in water, practically insoluble in alcohol, chloroform, ether and fixed oils but soluble in dilute acids or bases. The solution should not be autoclaved; a stock solution should be sterilized through filtration and stored frozen, where it will be stable for months.

Other Notes

Keep container tightly closed in a dry and well-ventilated place. Storage class (TRGS 510): Non Combustible Solids

Price and Availability

Safety & Documentation

Safety Information

Symbol 
GHS08  GHS08
Signal word 
Danger
Hazard statements 
Precautionary statements 
Personal Protective Equipment 
RIDADR 
NONH for all modes of transport
WGK Germany 
2
RTECS 
XH8400000

Frequently Asked Questions

Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis. These documents are located on the product detail page under Useful Links & Tools. Click on the following link to search for a Certificate of Analysis. Please click the following link to see the details on our Product Dating Information.
What is the solubility of Product A9518, Ampicillin sodium salt?
This product is soluble in water at a concentration of 50 mg/mL, producing a clear, colorless to faint yellow solution.  
Is Ampicillin product stable in solution?
We recommend using freshly prepared solutions. A concentrated solution of sodium ampicillin in water (approximately 330 mg/mL) may be expected to lose about 10% potency in 20 hours at -20°C.
How do I use Ampicllin in agar plates?
For plates, add ampicillin to autoclaved media cooled to 48°C, to a final concentration of 35-50 µg/mL. Pour the plates, and allow them to cool completely. Plates may be stored at 2-8°C for up to only 1-2 weeks before use.
How do I get lot-specific information or a Certificate of Analysis?
A Certificate of Analysis is available by lot number and can be obtained through our Advanced Search Option: http://www.sigmaaldrich.com/catalog/AdvancedSearchPage.do
How do I find price and availability?
There are several ways to find pricing and availability for our products.  Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers. 
What is the Department of Transportation shipping information for this product?
Transportation information can be found in Section 14 of the product's (M)SDS. To access the shipping information for this material, use the link on the product detail page for the product, or search here. 
My question is not addressed here, how can I contact Technical Service for assistance?
Use the option to the right to "Ask a Question" by email of a Technical Service Scientist.
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Protocols & Articles

Articles

USP HPLC Analysis of Ampicillin Sodium on Ascentis® Express C18

From our library of Articles, Sigma-Aldrich presents USP HPLC Analysis of Ampicillin Sodium on Ascentis® Express C18
Keywords: Antibiotics, Chromatography, High performance liquid chromatography, Pharmaceutical

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Peer-Reviewed Papers
15

References

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