Ampicillin

Ampicillin is an aminopenicillin antibiotic offering extended Gram-negative coverage relative to penicillin G through improved cell-wall penetration, and remains widely used for respiratory, urinary and gastrointestinal bacterial infections. Simson Pharma's Ampicillin reference standard and impurities support compendial testing across this long-established beta-lactam class.

Simson Pharma Global Ltd. (UK) and Simson Pharma Global LLC (USA) supply high-quality Ampicillin Reference Standards, pharmacopoeial reference materials, and its related impurities to pharmaceutical manufacturers, CROs, analytical laboratories, universities, and regulatory organizations worldwide. To service the Europe and America market efficiently, Simson Pharma Limited has set up Simson Pharma Global Ltd. in United Kingdom and Simson Pharma Global LLC in USA respectively.

Pharmaceutical Reference Standards / Impurity Standards

Ampicillin Trihydrate
Ampicillin Trihydrate
  • CAT. No.A480000
  • CAS. No.7177-48-2
  • Mol. F.C16H19N3O4S.3H2O
  • Mol. W.403.45 g/mol
  • Stock Status:Instock
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Ampicilin
Ampicilin
  • CAT. No.A480000A
  • CAS. No.69-53-4
  • Mol. F.C16H19N3O4S
  • Mol. W.349.41 g/mol
  • Stock Status:Instock
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Ampicillin Sodium Salt
Ampicillin Sodium Salt
  • CAT. No.A480000B
  • CAS. No.69-52-3;69-53-4(FreeBase)
  • Mol. F.C16H18N3NaO4S
  • Mol. W.371.39 g/mol
  • Stock Status:Custom Synthesis
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Ampicilin Anhydrous
Ampicilin Anhydrous
  • CAT. No.A480000C
  • CAS. No.69-53-4
  • Mol. F.C16H19N3O4S
  • Mol. W.349.40 g/mol
  • Stock Status:Under Synthesis
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Ampicillin EP Impurity B
Ampicillin EP Impurity B
  • CAT. No.A480001
  • CAS. No.19379-33-0
  • Mol. F.C16H19N3O4S
  • Mol. W.349.41 g/mol
  • Stock Status:Instock
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Ampicillin Impurity C
Ampicillin Impurity C
  • CAT. No.A480002
  • CAS. No.49841-96-5
  • Mol. F.C16H19N3O4S
  • Mol. W.349.40 g/mol
  • Stock Status:Instock
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Ampicillin EP Impurity D
Ampicillin EP Impurity D
  • CAT. No.A480003
  • CAS. No.32746-94-4
  • Mol. F.C16H21N3O5S
  • Mol. W.367.42 g/mol
  • Stock Status:Limited Stock
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Ampicillin EP Impurity G
Ampicillin EP Impurity G
  • CAT. No.A480004
  • CAS. No.31485-02-6
  • Mol. F.C16H14N2O2
  • Mol. W.266.30 g/mol
  • Stock Status:Instock
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Ampicillin EP Impurity H
Ampicillin EP Impurity H
  • CAT. No.A480005
  • CAS. No.73200-73-4
  • Mol. F.C10H8N2O
  • Mol. W.172.18 g/mol
  • Stock Status:Instock
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Ampicillin EP Impurity J
Ampicillin EP Impurity J
  • CAT. No.A480006
  • CAS. No.6489-58-3
  • Mol. F.C13H20N2O4S
  • Mol. W.300.37 g/mol
  • Stock Status:Custom Synthesis
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Ampicillin EP Impurity K
Ampicillin EP Impurity K
  • CAT. No.A480007
  • CAS. No.40610-41-1
  • Mol. F.C13H17NO3
  • Mol. W.235.28 g/mol
  • Stock Status:Instock
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Ampicillin EP Impurity F
Ampicillin EP Impurity F
  • CAT. No.A480008
  • CAS. No.124774-48-7
  • Mol. F.C15H21N3O3S
  • Mol. W.323.41 g/mol
  • Stock Status:Custom Synthesis
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Ampicillin EP Impurity I
Ampicillin EP Impurity I
  • CAT. No.A480009
  • CAS. No.10001-82-8
  • Mol. F.C24H26N4O5S
  • Mol. W.482.55 g/mol
  • Stock Status:Custom Synthesis
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Ampicillin EP Impurity E
Ampicillin EP Impurity E
  • CAT. No.A480010
  • CAS. No.1207726-28-0
  • Mol. F.C24H26N4O5S
  • Mol. W.482.56 g/mol
  • Stock Status:Limited Stock
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Ampicillin EP Impurity M
Ampicillin EP Impurity M
  • CAT. No.A480011
  • CAS. No.NA
  • Mol. F.C32H38N6O8S2
  • Mol. W.698.81 g/mol
  • Stock Status:Instock
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Ampicillin Oligomer 1 (trimer)
Ampicillin Oligomer 1 (trimer)
  • CAT. No.A480012
  • CAS. No.NA
  • Mol. F.C48H57N9O12S3
  • Mol. W.1048.21 g/mol
  • Stock Status:Instock
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Ampicilloic Acid Dimer
Ampicilloic Acid Dimer
  • CAT. No.A480013
  • CAS. No.NA
  • Mol. F.C32H40N6O9S2
  • Mol. W.716.82 g/mol
  • Stock Status:Custom Synthesis
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Ampicillin Open Ring Dimer
Ampicillin Open Ring Dimer
  • CAT. No.A480014
  • CAS. No.NA
  • Mol. F.C31H40N6O7S2
  • Mol. W.672.82 g/mol
  • Stock Status:Custom Synthesis
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Ampicillin Dimer Disodium Salt Hydrate
Ampicillin Dimer Disodium Salt Hydrate
  • CAT. No.A480015
  • CAS. No.NA
  • Mol. F.C32H36N6Na2O8S2.H2O
  • Mol. W.742.77 g/mol
  • Stock Status:Custom Synthesis
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Ampicillin EP Impurity N
Ampicillin EP Impurity N
  • CAT. No.A480017
  • CAS. No.NA
  • Mol. F.C16H19N3O4S
  • Mol. W.349.41 g/mol
  • Stock Status:Limited Stock
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Ampicillin oligomer 2
Ampicillin oligomer 2
  • CAT. No.A480018
  • CAS. No.1207725-82-3
  • Mol. F.C32H40N6O9S2
  • Mol. W.716.8 g/mol
  • Stock Status:Instock
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Ampicillin EP Impurity M
Ampicillin EP Impurity M
  • CAT. No.A480019
  • CAS. No.62326-82-3
  • Mol. F.C32H38N6O8S2
  • Mol. W.698.81 g/mol
  • Stock Status:Custom Synthesis
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N-Formyl Ampicilloic Acid
N-Formyl Ampicilloic Acid
  • CAT. No.A480021
  • CAS. No.NA
  • Mol. F.C17H21N3O6S
  • Mol. W.395.43 g/mol
  • Stock Status:Custom Synthesis
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Ampicillin Hydantoin Analog
Ampicillin Hydantoin Analog
  • CAT. No.A480022
  • CAS. No.NA
  • Mol. F.C17H17N3O5S
  • Mol. W.375.40 g/mol
  • Stock Status:Instock
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Ampicillin EP Impurity N Dimer Trisodium Salt
Ampicillin EP Impurity N Dimer Trisodium Salt
  • CAT. No.A480023
  • CAS. No.NA
  • Mol. F.C32H40N6O9S2:3Na
  • Mol. W.782.77 g/mol
  • Stock Status:Custom Synthesis
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Ampicillin Impurity F (Mixture of Diastereomers)
Ampicillin Impurity F (Mixture of Diastereomers)
  • CAT. No.A480024
  • CAS. No.2197189-82-3
  • Mol. F.C15H21N3O3S
  • Mol. W.323.41 g/mol
  • Stock Status:Custom Synthesis
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Ampicillin Dimer
Ampicillin Dimer
  • CAT. No.A480025
  • CAS. No.62326-82-3
  • Mol. F.C32H38N6O8S2
  • Mol. W.698.81 g/mol
  • Stock Status:Custom Synthesis
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Ampicillin Penicilloic Acid
Ampicillin Penicilloic Acid
  • CAT. No.A480026
  • CAS. No.1642629-93-3
  • Mol. F.C16H21N3O5S
  • Mol. W.367.42 g/mol
  • Stock Status:Custom Synthesis
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Ampicillin EP Impurity C
Ampicillin EP Impurity C
  • CAT. No.A480027
  • CAS. No.NA
  • Mol. F.C16H19N3O4S
  • Mol. W.349.40 g/mol
  • Stock Status:Custom Synthesis
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Ampicillin Impurity 2
Ampicillin Impurity 2
  • CAT. No.A480028
  • CAS. No.NA
  • Mol. F.C15H21N3O3S
  • Mol. W.323.41 g/mol
  • Stock Status:Custom Synthesis
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Ampicillin Impurity 3
Ampicillin Impurity 3
  • CAT. No.A480029
  • CAS. No.NA
  • Mol. F.C16H19N3O4S
  • Mol. W.349.40 g/mol
  • Stock Status:Custom Synthesis
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Ampicillin oligomer 1 ( S,S trimer)
Ampicillin oligomer 1 ( S,S trimer)
  • CAT. No.A480030
  • CAS. No.114977-84-3
  • Mol. F.C48H57N9O12S3
  • Mol. W.1048.22 g/mol
  • Stock Status:Custom Synthesis
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Ampicillin Impurity 4
Ampicillin Impurity 4
  • CAT. No.A480031
  • CAS. No.NA
  • Mol. F.C32H38N6O8S2
  • Mol. W.698.81 g/mol
  • Stock Status:Custom Synthesis
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Ampicillin Decarboxylated Open Ring Dimer
Ampicillin Decarboxylated Open Ring Dimer
  • CAT. No.A480032
  • CAS. No.NA
  • Mol. F.C31H40N6O7S2
  • Mol. W.672.82 g/mol
  • Stock Status:Custom Synthesis
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N-Nitroso Ampicillin EP Impurity C
N-Nitroso Ampicillin EP Impurity C
  • CAT. No.A480033
  • CAS. No.NA
  • Mol. F.C16H18N4O5S
  • Mol. W.378.40 g/mol
  • Stock Status:Custom Synthesis
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N-Nitroso Ampicillin EP Impurity D
N-Nitroso Ampicillin EP Impurity D
  • CAT. No.A480034
  • CAS. No.NA
  • Mol. F.C16H20N4O6S.2Na
  • Mol. W.440.38 g/mol
  • Stock Status:Custom Synthesis
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Ampicillin EP Impurity I Hydrochloride
Ampicillin EP Impurity I Hydrochloride
  • CAT. No.A480035
  • CAS. No.NA
  • Mol. F.C24H26N4O5S.HCl
  • Mol. W.519.01 g/mol
  • Stock Status:Custom Synthesis
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Ampicillin EP Impurity M Disodium
Ampicillin EP Impurity M Disodium
  • CAT. No.A480036
  • CAS. No.NA
  • Mol. F.C32H36N6O8S2.2Na
  • Mol. W.742.77 g/mol
  • Stock Status:Custom Synthesis
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Ampicillin Oligomer 1 (trimer) Sodium Salt
Ampicillin Oligomer 1 (trimer) Sodium Salt
  • CAT. No.A480037
  • CAS. No.94659-48-0
  • Mol. F.C48H54N9O12S3.3Na
  • Mol. W.1117.19 g/mol
  • Stock Status:Custom Synthesis
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Ampicillin Impurity 1
Ampicillin Impurity 1
  • CAT. No.C220020
  • CAS. No.142975-48-2
  • Mol. F.C11H10N2O3
  • Mol. W.218.21 g/mol
  • Stock Status:Instock
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Ampicillin EP Impurity A
Ampicillin EP Impurity A
  • CAT. No.F260001
  • CAS. No.551-16-6
  • Mol. F.C8H12N2O3S
  • Mol. W.216.26 g/mol
  • Stock Status:Instock
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Isotope Labelled Compounds

Ampicillin-D5
Ampicillin-D5
  • CAT. No.A480020
  • CAS. No.1426173-65-0
  • Mol. F.C16H14D5N3O4S
  • Mol. W.354.44 g/mol
  • Stock Status:Instock
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