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Carbenicillin disodium

A β-lactam antibiotic and useful selective agent
Catalog #: 2485
SKU-Size Size Price Qty
2485-1G 1 g
2485-5G 5 g
2485-10G 10 g
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Product Details

Alternate Name α-Carboxybenzylpenicillin disodium salt
Appearance White to off-white solid
CAS # 4800-94-6
Molecular Formula C₁₇H₁₆N₂Na₂O₆S
Molecular Weight 422.36
Solubility H₂O (~50 mg/ml)
SMILES CC1(C(N2C(S1)C(C2=O)NC(=O)C(C3=CC=CC=C3)C(=O)[O-])C(=O)[O-])C.[Na+].[Na+]
InChi InChI=1S/C17H18N2O6S.2Na/c1-17(2)11(16(24)25)19-13(21)10(14(19)26-17)18-12(20)9(15(22)23)8-6-4-3-5-7-8;;/h3-7,9-11,14H,1-2H3,(H,18,20)(H,22,23)(H,24,25);;/q;2*+1/p-2/t9?,10-,11+,14-;;/m1../s1
PubChem CID 20933
MDL Number MFCD00077683
Handling Protect from air and moisture
Storage Conditions -20°C
Shipping Conditions Gel Pack
USAGE For Research Use Only! Not For Use in Humans.


Carbenicillin disodium is a member of the carboxypenicillin β-lactam antibiotic family. Inhibits bacterial cell-wall synthesis by inactivating transpeptidases on the inner surface of the bacterial cell membrane. Unlike most β-lactams, carbenicillin disodium is limited to primarily gram negative bacteria including Pseudomonas aeruginosa and common enteric species. Carbenicillin is routinely used to select for mammalian cells containing the pET28 resistance plasmid in the Rosetta 2 cell line at an effective concentration of 50 µg/ml.

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