Impurity Reference Standard - Products

Cefprozil Monohydrate

CAT No: CL-CPMH-01 CAS No: 121123-17-9 Mol Wt: 389.4 : 18.0 Mol F: C18H19N3O5S : H2O Inv Status: Custom Synthesis

Chemical Name: (6R,7R)-7-[[(2R)-2-Amino-2-(4-hydroxyphenyl)acetyl]amino]-8-oxo-3-[(1EZ)-prop-1-enyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid monohydrate

Cefprozil Monohydrate EP Impurity A

CAT No: CL-CPMH-02 CAS No: 22818-40-2 Mol Wt: 167.2 Mol F: C8H9NO3 Inv Status: Custom Synthesis

Chemical Name: (2R)-2-Amino-2-(4-hydroxyphenyl)acetic acid ;(R)-2-Amino-2-(4-hydroxyphenyl)acetic acid (as per USP)

Cefprozil Monohydrate EP Impurity B

CAT No: CL-CPMH-03 CAS No: 50370-12-2 Mol Wt: 363.4 Mol F: C16H17N3O5S Inv Status: Custom Synthesis

Chemical Name: (6R,7R)-7-[[(2R)-2-Amino-2-(4-hydroxyphenyl)acetyl]amino]-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

Cefprozil Monohydrate EP Impurity C

CAT No: CL-CPMH-04 CAS No: 147103-93-3 Mol Wt: 233.2 Mol F: C11H11N3O3 Inv Status: Custom Synthesis

Chemical Name: (6RS)-3-(Aminomethylene)-6-(4-hydroxyphenyl)piperazine-2,5-dione ;3-(Aminomethylene)-6-(4-hydroxyphenyl)piperazine-2,5-dione (as per USP)

Cefprozil Monohydrate EP Impurity D

CAT No: CL-CPMH-05 CAS No: 106447-44-3 Mol Wt: 240.3 Mol F: C10H12N2O3S Inv Status: Custom Synthesis

Chemical Name: (6R,7R)-7-Amino-8-oxo-3-[(1Z)-prop-1-enyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid ; 7-Amino-3-propenylcephalosporanic acid (Z-isomer) (as per USP) ; (6R,7R)-7-Amino-8-oxo-3-[(Z)-prop-1-enyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid (as per USP)

Cefprozil Monohydrate EP Impurity E

CAT No: CL-CPMH-06 CAS No: NA Mol Wt: 538.6 Mol F: C26H26N4O7S Inv Status: Custom Synthesis

Chemical Name: (6R,7R)-7-[[(2R)-2-Amino-2-[4-[[(2R)-2-amino-2-(4-hydroxyphenyl)acetyl]oxy]phenyl]acetyl]amino]-8-oxo-3-[(1Z)-prop-1-enyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

Cefprozil Monohydrate EP Impurity F

CAT No: CL-CPMH-07 CAS No: 107937-01-9 Mol Wt: 240.3 Mol F: C10H12N2O3S Inv Status: Custom Synthesis

Chemical Name: (6R,7R)-7-Amino-8-oxo-3-[(1E)-prop-1-enyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid ; 7-Amino-3-propenylcephalosporanic acid (E-isomer) (as per USP) ; (6R,7R)-7-Amino-8-oxo-3-[(E)-prop-1-enyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid (as per USP)

Cefprozil Monohydrate EP Impurity G

CAT No: CL-CPMH-08 CAS No: NA Mol Wt: 407.4 Mol F: C18H21N3O6S Inv Status: Custom Synthesis

Chemical Name: (2R)-2-[(2R)-2-Amino-2-(4-hydroxyphenyl)acetyl]amino-2-[(2R)-4-carboxy-5-[(1Z)-prop-1-enyl]-3,6-dihydro-2H-1,3-thiazin-2-yl]-acetic acid ; (R)-2-{(R)-[(R)-2-Amino-2-(4-hydroxyphenyl)acetamido](carboxy)methyl}-5-[(Z)-prop-1-enyl]-3,6-dihydro-2H-1,3-thiazine-4-carboxylic acid (as per USP)

Cefprozil Monohydrate EP Impurity H

CAT No: CL-CPMH-09 CAS No: NA Mol Wt: 538.6 Mol F: C26H26N4O7S Inv Status: Custom Synthesis

Chemical Name: 6R,7R)-7-[[(2R)-2-[[(2R)-2-Amino-2-(4-hydroxyphenyl)acetyl]amino]-2-(4-hydroxyphenyl)acetyl]amino]-8-oxo-3-[(1Z)-prop-1-enyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid ; (6R,7R)-7-{(R)-2-[(R)-2-Amino-2-(4-hydroxyphenyl)acetamido]-2-(4-hydroxyphenyl)acetamido}-8-oxo-3-[(Z)-prop-1-enyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid (as per USP)

Cefprozil Monohydrate EP Impurity I

CAT No: CL-CPMH-10 CAS No: NA Mol Wt: 407.4 Mol F: C18H21N3O6S Inv Status: Custom Synthesis

Chemical Name: (2R)-2-[(2R)-2-Amino-2-(4-hydroxyphenyl)acetyl]amino-2-[(2R)-4-carboxy-5-[(1E)-prop-1-enyl]-3,6-dihydro-2H-1,3-thiazin-2-yl]-acetic acid ; (R)-2-{(R)-[(R)-2-Amino-2-(4-hydroxyphenyl)acetamido](carboxy)methyl}-5-[(E)-prop-1-enyl]-3,6-dihydro-2H-1,3-thiazine-4-carboxylic acid (as per USP)

Cefprozil Monohydrate EP Impurity J

CAT No: CL-CPMH-11 CAS No: NA Mol Wt: 538.6 Mol F: C26H26N4O7S Inv Status: Custom Synthesis

Chemical Name: (6R,7R)-7-[[(2R)-2-[[(2R)-2-Amino-2-(4-hydroxyphenyl)acetyl]amino]-2-(4-hydroxyphenyl)acetyl]amino]-8-oxo-3-[(1E)-prop-1-enyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid ; (6R,7R)-7-{(R)-2-[(R)-2-Amino-2-(4-hydroxyphenyl)acetamido]-2-(4-hydroxyphenyl)acetamido}-8-oxo-3-[(E)-prop-1-enyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid (as per USP)

Cefprozil Monohydrate EP Impurity K

CAT No: CL-CPMH-12 CAS No: NA Mol Wt: 389.4 Mol F: C18H19N3O5S Inv Status: Custom Synthesis

Chemical Name: Mixture of 4 diastereoisomers of (3RS,6RS)-3-[(2R,5R)-5-ethyl-7-oxo-1,2,5,7-tetrahydro-4H-furo[3,4-d][1,3]thiazin-2-yl]-6-(4-hydroxyphenyl)piperazine-2,5-dione

Cefprozil Monohydrate EP Impurity L

CAT No: CL-CPMH-13 CAS No: 203007-73-2 Mol Wt: 211.2 Mol F: C10H13NO4 Inv Status: Custom Synthesis

Chemical Name: 2-Hydroxyethyl (2R)-2-amino-2-(4-hydroxyphenyl)acetate

Cefprozil Monohydrate EP Impurity M

CAT No: CL-CPMH-14 CAS No: 1605314-84-8 Mol Wt: 461.5 Mol F: C21H23N3O7S Inv Status: Custom Synthesis

Chemical Name: (6R,7R)-7-[[(2R)-2-Amino-2-[4-[(ethoxycarbonyl)oxy]phenyl]acetyl]amino]-8-oxo-3-[(1Z)-prop-1-enyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

Cefprozil Monohydrate EP Impurity N

CAT No: CL-CPMH-15 CAS No: 1605314-85-9 Mol Wt: 461.5 Mol F: C21H23N3O7S Inv Status: Custom Synthesis

Chemical Name: (6R,7R)-7-[[(2R)-2-Amino-2-[4-(ethoxycarbonyl)oxy]phenyl]acetyl]amino]-8-oxo-3-[(1E)-prop-1-enyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

Cefprozil Delta-3 Isomer

CAT No: CL-CPMH-16 CAS No: 1000980-59-5 Mol Wt: 389.4 Mol F: C18H19N3O5S Inv Status: Custom Synthesis

Chemical Name: (6R,7R)-7-((R)-2-Amino-2-(4-hydroxyphenyl)acetamido)-8-oxo-3-((Z)-prop-1-en-1-yl)-5-thia-1-azabicyclo[4.2.0]oct-3-ene-2-carboxylic acid

Cefprozil (Z)-Isomer

CAT No: CL-CPMH-17 CAS No: 121412-77-9 Mol Wt: 389.4 Mol F: C18H19N3O5S Inv Status: Custom Synthesis

Chemical Name: (6R,7R)-7-((R)-2-Amino-2-(4-hydroxyphenyl)acetamido)-8-oxo-3-((Z)-prop-1-en-1-yl)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

Cefprozil (E)-Isomer

CAT No: CL-CPMH-18 CAS No: 92676-86-3 Mol Wt: 389.4 Mol F: C18H19N3O5S Inv Status: Custom Synthesis

Chemical Name: (6R,7R)-7-((R)-2-Amino-2-(4-hydroxyphenyl)acetamido)-8-oxo-3-((E)-prop-1-en-1-yl)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

Cefprozil Amide

CAT No: CL-CPMH-19 CAS No: NA Mol Wt: 538.6 Mol F: C26H26N4O7S Inv Status: Custom Synthesis

Chemical Name: (R)-2-{(6R,7R)-7-[(R)-2-Amino-2-(4-hydroxyphenyl)acetamido]-8-oxo-3-[(Z)-prop-1-en-1-yl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxamido}-2-(4-hydroxyphenyl)acetic acid; 2-((6R,7R)-7-((R)-2-Amino-2-(4-hydroxyphenyl)acetamido)-8-oxo-3-((Z)-prop-1-en-1-yl)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxamido)-2-(4-hydroxyphenyl)acetic acid

Cefprozil Dimer

CAT No: CL-CPMH-20 CAS No: NA Mol Wt: 760.8 Mol F: C36H36N6O9S2 Inv Status: Custom Synthesis

Chemical Name: (6R,7R)-3-[(E)-1-Propenyl]-7-[(2R)-2-({(7S)-4-[(E)-1-propenyl]-7-[(2R)-2-amino-2-(p-hydroxyphenyl)acetylamino]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-3-en-3-yl}carbonylamino)-2-(p-hydroxyphenyl)acetylamino]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

Cefprozil Impurity CPZRC-4

CAT No: CL-CPMH-21 CAS No: NA Mol Wt: 461.5 Mol F: C21H23N3O7S Inv Status: Custom Synthesis

Chemical Name: (Z)-7-(2-Amino-2-(4-((ethoxycarbonyl)oxy)phenyl)acetamido)-8-oxo-3-(prop-1-en-1-yl)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

Cefprozil Impurity CPZRC-5

CAT No: CL-CPMH-22 CAS No: NA Mol Wt: 538.6 Mol F: C26H26N4O7S Inv Status: Custom Synthesis

Chemical Name: (Z)-7-(2-(2-Amino-2-(4-hydroxyphenyl)acetamido)-2-(4-hydroxyphenyl)acetamido)-8-oxo-3-(prop-1-en-1-yl)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

Cefprozil L-Epimer

CAT No: CL-CPMH-23 CAS No: 110764-35-7 Mol Wt: 389.4 Mol F: C18H19N3O5S Inv Status: Custom Synthesis

Chemical Name: (6R,7R)-7-[(S)-2-Amino-2-(4-hydroxyphenyl)acetamido]-8-oxo-3-[(Z)-prop-1-enyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

O-D phenylglycine Cefprozil

CAT No: CL-CPMH-24 CAS No: NA Mol Wt: 538.6 Mol F: C26H26N4O7S Inv Status: Custom Synthesis

Chemical Name: 4-Hydroxy-D-phenylglycine

N-D phenylglycine Cefprozil

CAT No: CL-CPMH-25 CAS No: NA Mol Wt: 538.6 Mol F: C26H26N4O7S Inv Status: Custom Synthesis

Chemical Name: (6R,7R)-7-{(R)-2-[(R)-2-Amino-2-(4-hydroxyphenyl)acetamido]-2-(4-hydroxyphenyl)acetamido}-8-oxo-3-[prop-1-enyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid

Type:Impurity Reference Standard

API NAME:Cefprozil Monohydrate

Total Products: 25

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