Ampicillin

Ampicillin Related Products

Venkatasai is a leading innovator in the field of pharmaceutical reference standards, offering high-quality Reference Standards of Ampicillin, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope-labeled compounds, and nitrosamines (N-NO products). Our Ampicillin impurity reference standards play a vital role in pharmaceutical research, supporting product development, ANDA and DMF filings, quality control (QC), method validation, and stability studies. They are also instrumental in identifying unknown impurities and evaluating genotoxic potential. All Ampicillin-related products are thoroughly characterized and supplied with comprehensive Certificates of Analysis (COA) and analytical data that comply with regulatory standards. EP/USP traceable standards can also be provided upon request. Furthermore, all supplied products undergo periodic re-testing to ensure continued quality and reliability.

Ampicillin EP Impurity A

(2S,5R,6R)-6-amino-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid (as per EP and USP)
CAT No: VS-A064002
CAS No: 551-16-6
Mol.F.: C8H12N2O3S
Mol.Wt.: 216.3
Status: Custom Synthesis

Ampicillin EP Impurity A Calcium salt

(2S,5R,6R)-6-amino-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid Calcium salt (as per EP and USP)
CAT No: VS-A064004
CAS No: 35195-89-2
Mol.F.: C8H12N2O3S : 1/2Ca
Mol.Wt.: 216.3 : 1/2(40.1)
Status: Custom Synthesis

Ampicillin EP Impurity A Hydrochloride

(2S,5R,6R)-6-amino-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid Hydrochloride (as per EP and USP)
CAT No: VS-A064005
CAS No: 57218-58-3
Mol.F.: C8H12N2O3S : HCl
Mol.Wt.: 216.3 : 36.5
Status: Custom Synthesis

Ampicillin EP Impurity A Sodium salt

(2S,5R,6R)-6-amino-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid Sodium salt (as per EP and USP)
CAT No: VS-A064003
CAS No: 1203-85-6
Mol.F.: C8H12N2O3S : Na
Mol.Wt.: 216.3 : 23.0
Status: Custom Synthesis

Ampicillin EP Impurity B

(2S,5R,6R)-6-[[(2S)-2-amino-2-phenylacetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid (as per EP) (2S,5R,6R)-6-[(S)-2-Amino-2-phenylacetamido]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid (as pe
CAT No: VS-A064006
CAS No: 19379-33-0
Mol.F.: C16H19N3O4S
Mol.Wt.: 349.4
Status: Custom Synthesis

Ampicillin EP Impurity B Sodium salt

(2S,5R,6R)-6-[[(2S)-2-amino-2-phenylacetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid Sodium salt (as per EP) (2S,5R,6R)-6-[(S)-2-Amino-2-phenylacetamido]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic
CAT No: VS-A064007
CAS No: 2238812-60-5
Mol.F.: C16H19N3O4S : Na
Mol.Wt.: 349.4 : 23.0
Status: Custom Synthesis

Ampicillin EP Impurity C

(4S)-2-(3,6-dioxo-5-phenylpiperazin-2-yl)-5,5-dimethylthiazolidine-4-carboxylic acid ( as per EP)
CAT No: VS-A064008
CAS No: N/A
Mol.F.: C16H19N3O4S
Mol.Wt.: 349.4
Status: Custom Synthesis

Ampicillin EP Impurity C (Mixture Of Diastereomers)

2-(3,6-Dioxo-5-phenyl-2-piperazinyl)-5,5-dimethyl-4-thiazolidinecarboxylic acid
CAT No: VS-A064048
CAS No: 49841-96-5
Mol.F.: C16H19N3O4S
Mol.Wt.: 349.41
Status: Custom Synthesis

Ampicillin EP Impurity D

(4S)-2-[[[(2R)-2-amino-2-phenylacetyl]amino]carboxymethyl]-5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid (as per EP); (4S)-2-{[(R)-2-Amino-2-phenylacetamido]methyl}-5,5-dimethylthiazolidine-4-carboxylic acid (as per USP)
CAT No: VS-A064009
CAS No: 32746-94-4
Mol.F.: C16H21N3O5S
Mol.Wt.: 367.4
Status: Custom Synthesis

Ampicillin EP Impurity D Sodium salt

(4S)-2-{[(R)-2-Amino-2-phenylacetamido]methyl}-5,5-dimethylthiazolidine-4-carboxylic acid Sodium salt (as per USP)
CAT No: VS-A064010
CAS No: 63492-99-9
Mol.F.: C16H21N3O5S : Na
Mol.Wt.: 367.4 : 23.0
Status: Custom Synthesis

Ampicillin EP Impurity E

(2R)-2-[[[(2S,5R,6R)-6-[[(2R)-2-amino-2-phenylacetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]hept-2-yl]carbonyl]amino]-2-phenylacetic acid (as per EP); (R)-2-((2S,5R,6R)-6-((R)-2-Amino-2-phenylacetamido)-3,3-dimethyl-7-oxo-4-thia-1-azabicycl
CAT No: VS-A064011
CAS No: 1207726-28-0
Mol.F.: C24H26N4O5S
Mol.Wt.: 482.6
Status: Custom Synthesis

Ampicillin EP Impurity F

(2RS,4S)-2-[[[(2R)-2-amino-2-phenylacetyl]amino]methyl]-5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid (as per EP)
CAT No: VS-A064012
CAS No: 124774-48-7
Mol.F.: C15H21N3O3S
Mol.Wt.: 323.4
Status: Custom Synthesis

Ampicillin EP Impurity G

(3R,6R)-3,6-Diphenylpiperazine-2,5-dione (as per EP) ; 3,6-Diphenylpiperazine-2,5-dione (as per USP)
CAT No: VS-A064013
CAS No: 31485-02-6
Mol.F.: C16H14N2O2
Mol.Wt.: 266.3
Status: Custom Synthesis

Ampicillin EP Impurity H

3-Phenylpyrazin-2-ol (as per EP and USP)
CAT No: VS-A064014
CAS No: 73200-73-4
Mol.F.: C10H8N2O
Mol.Wt.: 172.2
Status: Custom Synthesis

Ampicillin EP Impurity I

(2S,5R,6R)-6-[[(2R)-2-[[(2R)-2-amino-2-phenylacetyl]amino]-2-phenylacetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid (as per EP); (2S,5R,6R)-6-{(R)-2-[(R)-2-Amino-2-phenylacetamido]-2-phenylacetamido}-3,3-dimethyl-7-oxo
CAT No: VS-A064015
CAS No: 10001-82-8
Mol.F.: C24H26N4O5S
Mol.Wt.: 482.6
Status: Custom Synthesis

Ampicillin EP Impurity I HCl

(2S,5R,6R)-6-[[(2R)-2-[[(2R)-2-Amino-2-phenylacetyl] amino]-2-phenylacetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid hydrochloride
CAT No: VS-A064016
CAS No: N/A
Mol.F.: C24H26N4O5S : HCl
Mol.Wt.: 482.6 : 36.5
Status: Custom Synthesis

Ampicillin EP Impurity J

(2S,5R,6R)-6-[(2,2-dimethylpropanoyl)amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid (as per EP)
CAT No: VS-A064017
CAS No: 6489-58-3
Mol.F.: C13H20N2O4S
Mol.Wt.: 300.4
Status: Custom Synthesis

Ampicillin EP Impurity J Potassium salt

(2S,5R,6R)-6-[(2,2-dimethylpropanoyl)amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid Potassium salt (as per EP)
CAT No: VS-A064019
CAS No: 50547-66-5
Mol.F.: C13H20N2O4S : K
Mol.Wt.: 300.4 : 39.1
Status: Custom Synthesis

Ampicillin EP Impurity J Sodium salt

(2S,5R,6R)-6-[(2,2-dimethylpropanoyl)amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid Sodium salt (as per EP)
CAT No: VS-A064018
CAS No: 20520-33-6
Mol.F.: C13H20N2O4S : Na
Mol.Wt.: 300.4 : 23.0
Status: Custom Synthesis

Ampicillin EP Impurity K

(2R)-2-[(2,2-dimethylpropanoyl)amino]-2-phenylacetic acid (as per EP)
CAT No: VS-A064020
CAS No: 40610-41-1
Mol.F.: C13H17NO3
Mol.Wt.: 235.3
Status: Custom Synthesis

Ampicillin EP Impurity L

(2R)-2-amino-2-phenylacetic acid (as per EP) ; (R)-2-Amino-2-phenylacetic acid (as per USP)
CAT No: VS-A064021
CAS No: 875-74-1
Mol.F.: C8H9NO2
Mol.Wt.: 151.2
Status: Custom Synthesis

Ampicillin EP Impurity L Hydrochloride

(2R)-2-amino-2-phenylacetic acid Hydrochloride (as per EP) ; (R)-2-Amino-2-phenylacetic acid Hydrochloride (as per USP)
CAT No: VS-A064022
CAS No: 25705-52-6
Mol.F.: C8H9NO2 : HCl
Mol.Wt.: 151.2 : 36.5
Status: Custom Synthesis

Ampicillin EP Impurity L Potassium salt

(2R)-2-amino-2-phenylacetic acid Potassium salt (as per EP) ; (R)-2-Amino-2-phenylacetic acid Potassium salt (as per USP)
CAT No: VS-A064024
CAS No: 37661-32-8
Mol.F.: C8H9NO2 : K
Mol.Wt.: 151.2 : 39.1
Status: Custom Synthesis

Ampicillin EP Impurity L Sodium salt

(2R)-2-amino-2-phenylacetic acid Sodium salt (as per EP) ; (R)-2-Amino-2-phenylacetic acid Sodium salt(as per USP)
CAT No: VS-A064023
CAS No: 56337-83-8
Mol.F.: C8H9NO2 : Na
Mol.Wt.: 151.2 : 23.0
Status: Custom Synthesis

Ampicillin EP Impurity M

(2S,5R,6R)-6-((2R)-2-(2-((R)-2-amino-2-phenylacetamido)-2-((4S)-4-carboxy-5,5-dimethylthiazolidin-2-yl)acetamido)-2-phenylacetamido)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid
CAT No: VS-A064025
CAS No: 62326-82-3
Mol.F.: C32H38N6O8S2
Mol.Wt.: 698.8
Status: Custom Synthesis

Ampicillin EP Impurity M Disodium salt

(1S,4S,7R)-7-((2R)-2-(2-((R)-2-amino-2-phenylacetamido)-2-((4S)-4-carboxy-5,5-dimethyltetrahydrothiophen-2-yl)acetamido)-2-phenylacetamido)-3,3-dimethyl-6-oxo-2-thiabicyclo[3.2.0]heptane-4-carboxylic acid, Disodium salt
CAT No: VS-A064026
CAS No: 94730-51-5
Mol.F.: C32H38N6O8S2 : 2(Na)
Mol.Wt.: 698.8 : 2(23.0)
Status: Custom Synthesis

Ampicillin EP Impurity N (Dimer)

(4S)-2-(1-((R)-2-amino-2-phenylacetamido)-2-(((1R)-2-(((1R)-carboxy((4S)-4-carboxy-5,5-dimethylthiazolidin-2-yl)methyl)amino)-2-oxo-1-phenylethyl)amino)-2-oxoethyl)-5,5-dimethylthiazolidine-4-carboxylic acid, Trisodium salt.
CAT No: VS-A064027
CAS No: N/A
Mol.F.: C32H40N6O9S2 : 3Na
Mol.Wt.: 716.8 : 3(23.0)
Status: Custom Synthesis

Ampicillin EP Impurity N (Trimer)

(2R,2'R,2''R,4S,4'S,4''S)-2,2',2''-((1R,7R,10R,13S,16R)-16-amino-1-carboxy-3,6,9,12,15-pentaoxo-4,10,16-triphenyl-2,5,8,11,14-pentaazahexadecane-1,7,13-triyl)tris(5,5-dimethylthiazolidine-4-carboxylic acid) Quaternary sodium salt
CAT No: VS-A064028
CAS No: N/A
Mol.F.: C48H59N9O13S3 : 4(Na)
Mol.Wt.: 1066.2 : 4(23.0)
Status: Custom Synthesis

Ampicillin oligomer 1 (trimer)

(4S,4'S)-2,2'-{(1R,7R,13R)-1-Amino-14-[(2S,5R,6R)-2-carboxy-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptan-6-ylamino]-2,5,8,11,14-pentaoxo-1,7,13-triphenyl-3,6,9,12-tetraazatetradecane-4,10-diyl}bis(5,5-dimethylthiazolidine-4-carboxylic acid) (as per
CAT No: VS-A064038
CAS No: 114977-84-3
Mol.F.: C48H57N9O12S3
Mol.Wt.: 1048.2
Status: Custom Synthesis

Ampicillin Oligomer 1 (trimer) Sodium salt

(4S,4'S)-2,2'-{(1R,7R,13R)-1-Amino-14-[(2S,5R,6R)-2-carboxy-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptan-6-ylamino]-2,5,8,11,14-pentaoxo-1,7,13-triphenyl-3,6,9,12-tetraazatetradecane-4,10-diyl}bis(5,5-dimethylthiazolidine-4-carboxylic acid) Trisodi
CAT No: VS-A064030
CAS No: 94659-48-0
Mol.F.: C48H57N9O12S3 : 3Na
Mol.Wt.: 1048.2 : 3(23.0)
Status: Custom Synthesis

Ampicillin Oligomer 2

(4S)-2-((1R)-1-((R)-2-amino-2-phenylacetamido)-2-(((1R)-2-(((1R)-carboxy((4S)-4-carboxy-5,5-dimethylthiazolidin-2-yl)methyl)amino)-2-oxo-1-phenylethyl)amino)-2-oxoethyl)-5,5-dimethylthiazolidine-4-carboxylic acid
CAT No: VS-A064045
CAS No: 1207725-82-3
Mol.F.: C32H40N6O9S2
Mol.Wt.: 716.8
Status: Custom Synthesis

Ampicillin Open ring dimer

Disodium ((4S)-2-{1-[(R)-2-amino-2-phenylacetamido]-2-[(1R)-2-{[(4S)-4-carboxy-5,5-dimethylthiazolidin-2-yl]methylamino}-2-oxo-1-phenylethylamino]-2-oxoethyl}-5,5-dimethylthiazolidine-4-carboxylic acid).
CAT No: VS-A064035
CAS No: N/A
Mol.F.: C31H40N6O7S2 : 2Na
Mol.Wt.: 672.8 : 2(23.0)
Status: Custom Synthesis

Ampicillin Related Compound 1

(E)-3-(hydroxymethylene)-6-phenylpiperazine-2,5-dione
CAT No: VS-A064029
CAS No: 142975-48-2
Mol.F.: C11H10N2O3?
Mol.Wt.: 218.2
Status: Custom Synthesis

Ampicillin Sodium salt

(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 sodium salt (as per EP); (Monosodium D-(?)-6-(2-amino-2-phenylacetamido)-3,3-dimethyl-7-oxo-4-thia-1- azabicyclo[3.2.0]heptane-2-carb
CAT No: VS-A064000
CAS No: 69-52-3
Mol.F.: C16H19N3O4S : Na
Mol.Wt.: 349.4 : 23.0
Status: Custom Synthesis

Ampicillin Trihydrate

(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 (as per EP); (2S,5R,6R)-6-[(R)-2-Amino-2-phenylacetamido]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic
CAT No: VS-A064001
CAS No: 7177-48-2
Mol.F.: C16H19N3O4S : 3H2O
Mol.Wt.: 349.4 : 3(18.0)
Status: Custom Synthesis

Ampicillin Trihydrate Impurity N

(3S)-6-[[(2R)-2-Amino-2-phenylacetyl]amino]-2,2-dimethyl-7-oxo-2,3,4,7-tetrahydro-1,4-thiazepine-3-carboxylic Acid
CAT No: VS-A064037
CAS No: N/A
Mol.F.: C16H19N3O4S
Mol.Wt.: 349.4
Status: Custom Synthesis

Cephradine

(6R,7R)-7-((R)-2-amino-2-(cyclohexa-1,4-dien-1-yl)acetamido)-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
CAT No: VS-A064044
CAS No: 38821-53-3
Mol.F.: C16H19N3O4S
Mol.Wt.: 349.4
Status: Custom Synthesis

D-Phenylglycinamide

(R)-2-amino-2-phenylacetamide
CAT No: VS-A064036
CAS No: 6485-67-2
Mol.F.: C8H10N2O
Mol.Wt.: 150.2
Status: Custom Synthesis

D-Phenylglycinamide Hydrobromide salt

(R)-2-amino-2-phenylacetamide Hydrobromide salt
CAT No: VS-A064043
CAS No: 67861-60-3
Mol.F.: C8H10N2O : HBr
Mol.Wt.: 150.2 : 80.1
Status: Custom Synthesis

D-Phenylglycinamide Hydrochloride

(R)-2-amino-2-phenylacetamide Hydrochloride salt
CAT No: VS-A064041
CAS No: 63291-39-4
Mol.F.: C8H10N2O : HCl
Mol.Wt.: 150.2 : 36.5
Status: Custom Synthesis

D-Phenylglycinamide Sulfate salt

(R)-2-amino-2-phenylacetamide Sulfate salt
CAT No: VS-A064042
CAS No: 181495-38-5
Mol.F.: C8H10N2O : 1/2H2SO4
Mol.Wt.: 150.2 : 1/2(98.1)
Status: Custom Synthesis

L-Phenylglycine Amide

(S)-2-Amino-2-phenylacetamide
CAT No: VS-A064047
CAS No: 6485-52-5
Mol.F.: C8H10N2O
Mol.Wt.: 150.2
Status: Custom Synthesis

Pivampicillin

2,2-dimethylpropanoyloxymethyl (2S,5R,6R)-6-[[(2R)-2-amino-2-phenylacetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate
CAT No: VS-A064031
CAS No: 33817-20-8
Mol.F.: C22H29N3O6S
Mol.Wt.: 463.5
Status: Custom Synthesis

Pivampicillin Hydrochloride

(pivaloyloxy)methyl (2S,5R,6R)-6-((R)-2-amino-2-phenylacetamido)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate Hydrochloride
CAT No: VS-A064039
CAS No: 26309-95-5
Mol.F.: C22H29N3O6S : HCl
Mol.Wt.: 463.5 : 36.5
Status: Custom Synthesis

Pivampicillin Impurity A

2-((R)-2-amino-2-phenylacetamido)-2-((4S)-5,5-dimethyl-4-(((pivaloyloxy)methoxy)carbonyl)thiazolidin-2-yl)acetic acid
CAT No: VS-A064032
CAS No: N/A
Mol.F.: C22H31N3O7S?
Mol.Wt.: 481.6
Status: Custom Synthesis

Pivampicillin Impurity B

(pivaloyloxy)methyl (4S)-2-(3,6-dioxo-5-phenylpiperazin-2-yl)-5,5-dimethylthiazolidine-4-carboxylate
CAT No: VS-A064033
CAS No: N/A
Mol.F.: C22H29N3O6S?
Mol.Wt.: 463.5
Status: Custom Synthesis

S Isomer of Ampicillin Impurities G

(3S,6S)-3,6-Diphenylpiperazine-2,5-dione
CAT No: VS-A064046
CAS No: 281670-46-0
Mol.F.: C16H14N2O2
Mol.Wt.: 266.3
Status: Custom Synthesis

Talampicillin

3-oxo-1,3-dihydroisobenzofuran-1-yl (2S,5R,6R)-6-((R)-2-amino-2-phenylacetamido)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate
CAT No: VS-A064040
CAS No: 47747-56-8
Mol.F.: C24H23N3O6S
Mol.Wt.: 481.5
Status: Custom Synthesis

Talampicillin Hydrochloride

(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 1,3-dihydro-3-oxo-1-isobenzofuranyl ester hydrochloride (1:1)
CAT No: VS-A064034
CAS No: 39878-70-1
Mol.F.: C24H23N3O6S : HCl
Mol.Wt.: 481.5 : 36.5
Status: Custom Synthesis

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