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Cleanchem is a trusted provider of premium pharmaceutical reference materials, specializing in Pendimethalin and its associated compounds. Our catalog includes pharmacopeial and non-pharmacopeial Pendimethalin impurities, metabolites, nitrosamine derivatives (N-NO compounds), and stable isotope-labeled products. These reference standards play a critical role in pharmaceutical R&D, supporting activities such as product formulation, ANDA and DMF submissions, quality assurance, analytical method development, and stability assessments.
All Pendimethalin-related substances undergo comprehensive characterization and are delivered with complete Certificates of Analysis and supporting analytical documentation to ensure regulatory adherence. Upon request, we can offer EP/USP traceable standards. Our products are routinely re-evaluated to maintain consistent quality and performance.

Pendimethalin Impurity 1

CAT No: CL-PND-02 CAS No: 56038-89-2 Mol Wt: 191.3 Mol F: C13H21N Inv Status: Custom Synthesis

Chemical Name: 3,4-Dimethyl-N-(pentan-3-yl)aniline

Pendimethalin Impurity 2

CAT No: CL-PND-03 CAS No: 40318-31-8 Mol Wt: 211.2 Mol F: C8H9N3O4 Inv Status: Custom Synthesis

Chemical Name: 3,4-Dimethyl-2,6-dinitroaniline

Pendimethalin Impurity 3

CAT No: CL-PND-04 CAS No: 40318-45-4 Mol Wt: 267.3 Mol F: C12H17N3O4 Inv Status: Custom Synthesis

Chemical Name: N-(Sec-butyl)-3,4-dimethyl-2,6-dinitroaniline

Pendimethalin Impurity 4

CAT No: CL-PND-05 CAS No: 2724543-66-0 Mol Wt: 281.3 Mol F: C13H19N3O4 Inv Status: Custom Synthesis

Chemical Name: 2,3-Dimethyl-4,6-dinitro-N-(pentan-3-yl)aniline

Pendimethalin Impurity 5

CAT No: CL-PND-06 CAS No: 56038-88-1 Mol Wt: 281.3 Mol F: C13H19N3O4 Inv Status: Custom Synthesis

Chemical Name: 4,5-dimethyl-2-nitro-N-(pentan-3-yl)aniline

Pendimethalin Impurity 6

CAT No: CL-PND-07 CAS No: 68897-50-7 Mol Wt: 281.31 Mol F: C13H19N3O4 Inv Status: Custom Synthesis

Chemical Name: N-(1-Ethylpropyl)- 2,3-dimethyl-4,6-dinitro-Benzenamine

Phenoxymethylpenicillin Potassium Impurity A

CAT No: CL-PND-08 CAS No: 113-98-4 Mol Wt: 333.4 : 39.1 Mol F: C16H17N2O4S : K Inv Status: Custom Synthesis

Chemical Name: Potassium (2S,5R,6R)-3,3-dimethyl-7-oxo-6-[(2-phenylacetyl)amino]-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate

Phenoxymethylpenicillin EP Impurity B

CAT No: CL-PND-09 CAS No: 122-59-8 Mol Wt: 152.2 Mol F: C8H8O3 Inv Status: Custom Synthesis

Chemical Name: 2-Phenoxyacetic acid

Phenoxymethylpenicillin Sodium EP Impurity D

CAT No: CL-PND-10 CAS No: 20880-67-5 Mol Wt: 366.4 Mol F: C16H18N2O6S Inv Status: Custom Synthesis

Chemical Name: (2S,5R,6R)-3,3-dimethyl-7-oxo-6-[[2-(4-hydroxyphenoxy)acetyl]amino]-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid

Phenoxymethylpenicillin EP Impurity E

CAT No: CL-PND-11 CAS No: NA Mol Wt: 368.4 Mol F: C16H20N2O6S Inv Status: Custom Synthesis

Chemical Name: (4S)-2-(carboxy(2-phenoxyacetamido)methyl)-5,5-dimethylthiazolidine-4-carboxylic acid

Phenoxymethylpenicillin EP Impurity F HCl

CAT No: CL-PND-12 CAS No: NA Mol Wt: 324.4 : 36.5 Mol F: C15H20N2O4S : HCl Inv Status: Custom Synthesis

Chemical Name: (4S)-5,5-dimethyl-2-((2-phenoxyacetamido)methyl)thiazolidine-4-carboxylic acid hydrochloride

Benzathine Diacetate

CAT No: CL-PND-13 CAS No: 122-75-8 Mol Wt: 240.4 : 2(60.1) Mol F: C16H20N2 : 2(C2H4O2) Inv Status: Custom Synthesis

Chemical Name: N1,N2-dibenzylethane-1,2-diamine diacetate

Benzathine Benzylpenicillin EP Impurity H

CAT No: CL-PND-14 CAS No: NA Mol Wt: 311.4 : 39.1 Mol F: C14H19N2O4S : K Inv Status: Custom Synthesis

Chemical Name: Potassium (2S,5R,6R)-6-[(3Z)-hex-3-enamido]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate

Benzathine Benzyl Penicillin EP Impurity I

CAT No: CL-PND-15 CAS No: 31447-86-6 Mol Wt: 313.4 : 39.1 Mol F: C14H21N2O4S : K Inv Status: Custom Synthesis

Chemical Name: Potassium (2S,5R,6R)-6-hexanamido-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate

Penicillin G Procaine

CAT No: CL-PND-16 CAS No: 6130-64-9 Mol Wt: 588.72 Mol F: C16H18N2O4S.C13H20N2O2.H2O Inv Status: Custom Synthesis

Chemical Name: (2S,5R,6R)-3,3-Dimethyl-7-oxo-6-[(phenylacetyl)amino]-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic Acid : 2-(Diethylamino)ethyl 4-Aminobenzoate hydrate

Benzylpenicillin EP Impurity C Sodium Salt

CAT No: CL-PND-17 CAS No: 5985-13-7 Mol Wt: 349.4 : 23.0 Mol F: C16H17N2O5S Inv Status: Custom Synthesis

Chemical Name: Sodium (2S,5R,6R)-6-[[(4-hydroxyphenyl)acetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate

Benzyl Penicilloic Acid Mono-Sodium Salt

CAT No: CL-PND-18 CAS No: NA Mol Wt: 374.39 Mol F: C16H19N2NaO5S Inv Status: Custom Synthesis

Chemical Name: Benzyl Penicilloic Acid Mono-Sodium Salt (Mixture of Diastereomers)

Benzathine Benzyl Penicillin EP Impurity C

CAT No: CL-PND-19 CAS No: NA Mol Wt: 574.7 Mol F: C32H38N4O4S Inv Status: Custom Synthesis

Chemical Name: (4S)-2-(2-(benzyl(2-(benzylamino)ethyl)amino)-2-oxo-1-(2-phenylacetamido)ethyl)-5,5-dimethylthiazolidine-4-carboxylic acid

Benzylpenicillin EP(CP) Impurity D

CAT No: CL-PND-20 CAS No: NA Mol Wt: 334.4 Mol F: C16H18N2O4S Inv Status: Custom Synthesis

Chemical Name: (3S,7R,7aR)-5-benzyl-2,2-dimethyl-2,3,7,7a-tetrahydroimidazo[5,1-b]thiazole-3,7-dicarboxylic acid

Benzylpenicillin EP(CP) Impurity F

CAT No: CL-PND-21 CAS No: NA Mol Wt: 344.86 Mol F: C15H21ClN2O3S Inv Status: Custom Synthesis

Chemical Name: Benzylpenicillin EP(CP) Impurity F

Benzylpenicillin CP Impurity G

CAT No: CL-PND-22 CAS No: NA Mol Wt: 177.22 Mol F: C6H11NO3S Inv Status: Custom Synthesis

Chemical Name: (4S)-2-hydroxy-5,5-dimethylthiazolidine-4-carboxylic acid

Benzylpenicillin CP Impurity H

CAT No: CL-PND-23 CAS No: 500-98-1 Mol Wt: 193.2 Mol F: C10H11NO3 Inv Status: Custom Synthesis

Chemical Name: 2-(2-Phenylacetamido)acetic acid ; 2-Phenylacetyl glycine

Benzylpenicillin CP Impurity I

CAT No: CL-PND-24 CAS No: 3264-88-8 Mol Wt: 334.4 Mol F: C16H18N2O4S Inv Status: Custom Synthesis

Chemical Name: N-[(2-Benzyl-5-oxo-2-oxazolin-4-ylidene)methyl]-3-mercapto-valine

Benzylpenicillin CP Impurity J

CAT No: CL-PND-25 CAS No: NA Mol Wt: 380.4 Mol F: C17H20N2O6S Inv Status: Custom Synthesis

Chemical Name: (4S)-2-(carboxy(2-phenylacetamido)methyl)-3-formyl-5,5-dimethylthiazolidine-4-carboxylic acid

Benzylpenicillin CP Impurity L

CAT No: CL-PND-26 CAS No: NA Mol Wt: 527.6 Mol F: C26H29N3O7S Inv Status: Custom Synthesis

Chemical Name: (4S)-2-(carboxy(2-phenylacetamido)methyl)-5,5-dimethyl-3-((2-phenylacetyl)glycyl)thiazolidine-4-carboxylic acid

Penicillic Acid

CAT No: CL-PND-27 CAS No: 90-65-3 Mol Wt: 170.2 Mol F: C8H10O4 Inv Status: Custom Synthesis

Chemical Name: (Z)-3-methoxy-5-methyl-4-oxohexa-2,5-dienoic acid

Penicillenic Acid

CAT No: CL-PND-28 CAS No: 10250-99-4 Mol Wt: 243.3 Mol F: C10H13NO4S Inv Status: Custom Synthesis

Chemical Name: (E)-3-mercapto-3-methyl-2-(((5-oxooxazol-4(5H)-ylidene)methyl)amino)butanoic acid

Benzathine Benzylpenicillin EP Impurity A

CAT No: CL-PND-29 CAS No: (4152-09-4) Mol Wt: 150.2 Mol F: C9H14 N2 Inv Status: Custom Synthesis

Chemical Name: 1,2-Ethanediamine,N-(phenylmethyl)- (9CI); Ethylenediamine, N-benzyl- (6CI,7CI,8CI);1-Amino-2-(N-benzylamino)ethane; N-(Phenylmethyl)-1,2-ethanediamine;N-Benzyl-1,2-diaminoethane; N-Benzyl-1,2-ethanediamine;N-Benzyl-1,2-ethylenediamine; N-Benzylethanediamine

Phenoxymethylpenillic Acid Dimethyl Ester

CAT No: CL-PND-30 CAS No: NA Mol Wt: 378.44 Mol F: C18H22N2O5S Inv Status: Custom Synthesis

Chemical Name: Phenoxymethylpenillic Acid Dimethyl Ester

Monomethyl Benzylpenicilloate

CAT No: CL-PND-31 CAS No: 59054-27-2 Mol Wt: 366.43 Mol F: C17H22N2O5S Inv Status: Custom Synthesis

Chemical Name: Monomethyl Benzylpenicilloate

Benzathine Benzylpenicillin EP Impurity E (2Na)

CAT No: CL-PND-33 CAS No: NA Mol Wt: 350.4 : 2(23.0) Mol F: C16H18N2O5S : 2(Na) Inv Status: Custom Synthesis

Chemical Name: Sodium (2?,4S)-2-[(?)-carboxy(2-phenylacetamido)methyl]-5,5-dimethyl-1,3-thiazolidine-4-carboxylate

Benzathine

CAT No: CL-PND-34 CAS No: 140-28-3 Mol Wt: 240.4 Mol F: C16H20N2 Inv Status: Custom Synthesis

Chemical Name: N1,N2-dibenzylethane-1,2-diamine diacetate

Benzylpenicillin (benzathine) tetrahydrate

CAT No: CL-PND-35 CAS No: 41372-02-5 Mol Wt: 240.4 : 2(334.4) : 4(18.0) Mol F: C16H20N2 : 2(C16H18N2O4S) : 4H2O Inv Status: Custom Synthesis

Chemical Name: N1,N2-Dibenzylethane-1,2-diamine bis[(2S,5R,6R)-3,3-dimethyl-7-oxo-6-(2-phenylacetamido)-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate] tetrahydrate

Benzathine Benzylpenicillin EP Impurity B

CAT No: CL-PND-36 CAS No: 103-82-2 Mol Wt: 136.2 Mol F: C8H8O2 Inv Status: Custom Synthesis

Chemical Name: 2-phenylacetic acid

Benzathine Benzylpenicillin EP Impurity G

CAT No: CL-PND-37 CAS No: 525-91-7 Mol Wt: 149.4:23.0 Mol F: C16H17N2O5S : Na Inv Status: Custom Synthesis

Chemical Name: Sodium (2S,5R,6R)-6-[[(4-hydroxyphenyl)acetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate

Benzathine Benzylpenicillin EP Impurity K

CAT No: CL-PND-38 CAS No: NA Mol Wt: 909.1 Mol F: C48H56N6O8S2 Inv Status: Custom Synthesis

Chemical Name: (2R,2'R,4S,4'S)-2,2'-[(4R,11R)-6,9-dibenzyl-2,5,10,13-tetraoxo-1,14-diphenyl-3,6,9,12-tetraazatetradecane-4,11-diyl]bis(5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid)

phenoxymethylpenicillin potassium

CAT No: CL-PND-39 CAS No: 132-98-9 Mol Wt: 388.48 Mol F: C16H17KN2O5S Inv Status: Custom Synthesis

Chemical Name: Phenoxymethylpenicillin Potassium

Isopenillic acid

CAT No: CL-PND-42 CAS No: 90962-63-3 Mol Wt: 334.39 Mol F: C16H18N2O4S Inv Status: Custom Synthesis

Chemical Name: Isopenillic Acid

Benzylpenicillin Impurity 1

CAT No: CL-PND-43 CAS No: NA Mol Wt: 411.5 Mol F: C18H25N3O6S Inv Status: Custom Synthesis

Chemical Name: (2R,4S)-2-((R)-1-((S)-2-amino-2-(4-hydroxyphenyl)acetamido)-2-ethoxy-2-oxoethyl)-5,5-dimethylthiazolidine-4-carboxylic acid

Benzylpenicillin Impurity 2

CAT No: CL-PND-44 CAS No: NA Mol Wt: 425.5 Mol F: C27H27N3O2 Inv Status: Custom Synthesis

Chemical Name: (R)-N-(1-Benzyl-5-(benzylamino)-2-oxo-1,2,5,6-tetrahydropyridin-3-yl)-2-phenylacetamide

Benzylpenicillin Impurity 3

CAT No: CL-PND-45 CAS No: NA Mol Wt: 425.5 Mol F: C27H27N3O2 Inv Status: Custom Synthesis

Chemical Name: N-(1,4-Dibenzyl-5-oxo-2,3,4,5-tetrahydro-1H-1,4-diazepin-6-yl)-2-phenylacetamide

Benzylpenicillin Impurity 4

CAT No: CL-PND-46 CAS No: NA Mol Wt: 424.5 Mol F: C19H24N2O7S Inv Status: Custom Synthesis

Chemical Name: (2R,4S)-5,5-dimethyl-2-[(1R)-2-oxo-2-(2-oxopropoxy)-1-(2-phenoxyacetamido)ethyl]-1,3-thiazolidine-4-carboxylic acid

Benzylpenicillin Impurity 5

CAT No: CL-PND-47 CAS No: NA Mol Wt: 692.7 Mol F: C28H40N2O16S Inv Status: Custom Synthesis

Chemical Name: (2R,4S)-2-[(1R)-2-[(6-{[3,4-dihydroxy-2,5-bis(hydroxymethyl)oxolan-2-yl]oxy}-3,4,5-trihydroxyoxan-2-yl)methoxy]-2-oxo-1-(2-phenoxyacetamido)ethyl]-5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid

Penicillin Impurity 1

CAT No: CL-PND-48 CAS No: NA Mol Wt: 344.4 Mol F: C14H20N2O6S Inv Status: Custom Synthesis

Chemical Name: (5R,6R)-6-(5-Carboxypentanamido)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid

Penicillin Impurity 2

CAT No: CL-PND-49 CAS No: NA Mol Wt: 350.4 Mol F: C16H18N2O5S Inv Status: Custom Synthesis

Chemical Name: (5S,6R)-3,3-Dimethyl-7-oxo-6-(2-phenoxyacetamido)-4-thia-1-azabicyclo[3.2.0]heptane-5-carboxylic acid

Phenoxymethyl Penicillin Impurity 1

CAT No: CL-PND-50 CAS No: NA Mol Wt: 424.5 Mol F: C19H24N2O7S Inv Status: Custom Synthesis

Chemical Name: (5R,6R)-6-(2-(4-(1-Hydroxypropoxy)phenoxy)acetamido)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid

Phenoxymethyl Penicillin Impurity 2

CAT No: CL-PND-51 CAS No: NA Mol Wt: 424.5 Mol F: C19H24N2O7S Inv Status: Custom Synthesis

Chemical Name: (8R,8aR)-5-Ethyl-5-hydroxy-2,2-dimethyl-7-oxo-8-(2-phenoxyacetamido)tetrahydro-5H,7H-thiazolo[3,2-c][1,3]oxazine-3-carboxylic acid

Phenoxymethyl Penicillin Impurity 3

CAT No: CL-PND-52 CAS No: NA Mol Wt: 424.5 Mol F: C19H24N2O7S Inv Status: Custom Synthesis

Chemical Name: (2R)-2-((R)-Carboxy(2-phenoxyacetamido)methyl)-5,5-dimethyl-3-propionylthiazolidine-4-carboxylic acid

Type:Impurity Reference Standard

Total Products: 48

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