Reference Standards Catalogue

Pharmaceutical
Grade Products

High-purity reference standards, impurity compounds, isotope labelled compounds, and APIs — certified, documented, and ready for regulatory use.

Filters
Category
Pharmacopoeia
Availability
139 products found
Nitrosamine · ICH
1-(3-Methoxyphenyl)-4-nitrosopiperazine
C11H15N3O2  |  CAS N/A

Nitrosopiperazine impurity standard for ICH M7 nitrosamine risk assessment in pharmaceutical drug substances.

On Request
MW: 221.26View Details
Impurity · N/A
2-(5,6-Dimethoxy-2-methyl-3H-inden-1-yl)acetic acid
C14H16O4  |  CAS 1428266-88-9

Impurity reference standard. Chemical name: 2-(5,6-dimethoxy-2-methyl-3H-inden-1-yl)acetic acid.

In Stock
MW: 248.28View Details
Impurity · USP
3-Chloro Cetirizine Dihydrochloride (USP)
C21H27Cl3N2O3  |  CAS 1232460-31-9

USP chloro-analogue impurity reference standard for cetirizine quality control. Chemical name: 2-[2-[4-[(3-Chlorophenyl)phenylmethyl]piperazin-1-yl]ethoxy]acetic acid dihydrochloride.

In Stock
MW: 461.81View Details
Reference · N/A
4-Azidomethyl-2'-cyanobiphenyl
C14H10N4  |  CAS 133690-91-2

Sartan intermediate reference standard. Chemical name: 4'-(Azidomethyl)-[1,1'-biphenyl]-2-carbonitrile.

In Stock
MW: 234.26View Details
Impurity · EP
Albendazole EP Impurity A
C10H13N3S  |  CAS 80983-36-4

EP impurity reference standard for albendazole quality control. Chemical name: 5-(Propylsulfanyl)-1H-benzimidazol-2-amine.

In Stock
MW: 207.30View Details
Impurity · EP
Albendazole EP Impurity B
C12H15N3O3S  |  CAS 54029-12-8

EP impurity reference standard for albendazole testing. Chemical name: Methyl N-[5-(propylsulfinyl)-1H-benzimidazol-2-yl]carbamate.

In Stock
MW: 281.33View Details
Impurity · EP
Albendazole EP Impurity C
C12H15N3O4S  |  CAS 75184-71-3

EP sulfone impurity reference standard for albendazole. Chemical name: Methyl N-[5-(propylsulfonyl)-1H-benzimidazol-2-yl]carbamate.

In Stock
MW: 297.33View Details
Impurity · N/A
Alpha-Phenyl-2-Piperidineacetamide (Mixture of Diastereomers)
C13H18N2O  |  CAS 19395-39-2

Impurity reference standard — mixture of diastereomers. Chemical name: 2-Phenyl-2-(piperidin-2-yl)acetamide.

In Stock
MW: 218.30View Details
Impurity · N/A
Apixaban Amino Acid Impurity
C25H27N5O5  |  CAS 2206825-87-6

Process amino acid impurity reference standard for apixaban anticoagulant quality control and analytical testing.

In Stock
MW: 477.52View Details
Impurity · N/A
Apixaban Carboxylic Acid Impurity
C25H24N4O5  |  CAS 503614-92-4

Carboxylic acid hydrolysis impurity reference standard for apixaban quality control. Chemical name: 1-(4-Methoxyphenyl)-7-oxo-6-(4-(2-oxopiperidin-1-yl)phenyl)-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxylic acid.

In Stock
MW: 460.49View Details
Impurity · N/A
Apixaban Chloro Impurity
C24H22ClN5O3  |  CAS 2029205-64-7

Chloro analogue impurity reference standard for apixaban quality control and analytical method validation.

In Stock
MW: 463.92View Details
Impurity · N/A
Apixaban Ethyl Ester
C27H28N4O5  |  CAS 503614-91-3

Ethyl ester impurity reference standard for apixaban pharmaceutical quality control and stability testing.

In Stock
MW: 488.54View Details