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Cleanchem is a trusted provider of premium pharmaceutical reference materials, specializing in Anastrozole and its associated compounds. Our catalog includes pharmacopeial and non-pharmacopeial Anastrozole 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 Anastrozole-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.

Anastrozole Monoamide Mononitrile

CAT No: CL-ANSZ-01 CAS No: 120512-03-0 Mol Wt: 311.4 Mol F: C17H21N5O Inv Status: Custom Synthesis

Chemical Name: 2-{3-[(1H-1,2,4-Triazol-1-yl)methyl]-5-(2-cyanopropan-2-yl)phenyl}-2-methylpropanamide (as per USP)

Anastrozole EP Impurity A

CAT No: CL-ANSZ-02 CAS No: 1215780-15-6 Mol Wt: 279.3 Mol F: C16H17N5 Inv Status: Custom Synthesis

Chemical Name: 2-[3-[(1RS)-1-Cyanoethyl]-5-(1H-1,2,4-triazol-1-ylmethyl)phenyl]-2-methylpropanenitrile ; 2-(3-(1-Cyanoethyl)-5-(1H-1,2,4-triazol-1-ylmethyl)phenyl)-2-methylpropionitrile (as per USP)

Anastrozole EP Impurity B

CAT No: CL-ANSZ-03 CAS No: 1216898-82-6 Mol Wt: 517.6 Mol F: C30H31N9 Inv Status: Custom Synthesis

Chemical Name: (2RS)-2,3-Bis[3-(1-cyano-1-methylethyl)-5-(1H-1,2,4-triazol-1-ylmethyl)phenyl]-2-methylpropanenitrile ; 2,3-Bis(3-(1-cyano-1-methylethyl)-5-(1H-1,2,4-triazol-1-ylmethyl)phenyl)-2-methylpropionitrile (as per USP)

Anastrozole EP Impurity C

CAT No: CL-ANSZ-04 CAS No: 120511-84-4 Mol Wt: 305.2 Mol F: C15H17BrN2 Inv Status: Custom Synthesis

Chemical Name: 2,2''(Bromomethyl)benze'1'diyl]bis'methylpropanenitrile) ; 2,2''(Bromomethy'1'phenylene)bis'methylpropionitrile) (as per USP)

Anastrozole EP Impurity D

CAT No: CL-ANSZ-05 CAS No: 1027160-12-8 Mol Wt: 384.1 Mol F: C15H16Br2N2 Inv Status: Custom Synthesis

Chemical Name: 2,2''(Dibromomethyl)benze'1'diyl]bis'methylpropanenitrile) ; 2,2''(Dibromomethy'1'phenylene)bis'methylpropionitrile) (as per USP)

Anastrozole EP Impurity E

CAT No: CL-ANSZ-06 CAS No: 120511-88-8 Mol Wt: 242.3 Mol F: C15H18N2O Inv Status: Custom Synthesis

Chemical Name: 2,2''(Hydroxymethyl)benze'1'diyl]bis'methylpropanenitrile)

Anastrozole EP Impurity F (Hydrate)

CAT No: CL-ANSZ-07 CAS No: 6192-52-5 Mol Wt: 172.2 : 18.0 Mol F: C7H8O3S : H2O Inv Status: In Stock

Chemical Name: 2-Isopropyl-4-(methylaminomethyl)thiazole dihydrochloride

Anastrozole EP Impurity G

CAT No: CL-ANSZ-08 CAS No: 120511-92-4 Mol Wt: 293.4 Mol F: C17H19N5 Inv Status: Custom Synthesis

Chemical Name: 2,2''('1,2'Triaz'4-ylmethyl)benze'1'diyl]bis'methylpropanenitrile)

Anastrozole EP Impurity H

CAT No: CL-ANSZ-09 CAS No: 120511-72-0 Mol Wt: 226.3 Mol F: C15H18N2 Inv Status: Custom Synthesis

Chemical Name: 2,2''Methylbenze'1'diyl)bis'methylpropanenitrile)

Anastrozole EP Impurity I

CAT No: CL-ANSZ-10 CAS No: 120511-91-3 Mol Wt: 260.8 Mol F: C15H17ClN2 Inv Status: Custom Synthesis

Chemical Name: 2,2''(Chloromethyl)benze'1'diyl]bis'methylpropanenitrile)

Anastrozole Impurity A

CAT No: CL-ANSZ-11 CAS No: 918312-71-7 Mol Wt: 383.5 Mol F: C26H29N3 Inv Status: Custom Synthesis

Chemical Name: a1-[''Cya'1-methylethy'5-methylphenyl]methy'??1,??3,??3'tetrameth'1'benzenediacetonitrile

Anastrozole Diacid

CAT No: CL-ANSZ-12 CAS No: 1338800-81-9 Mol Wt: 331.4 Mol F: C17H21N3O4 Inv Status: Custom Synthesis

Chemical Name: 2,2'-{5-[(1H-1,2,4-Triazol-1-yl)methyl]-1,3-phenylene}bis(2-methylpropanoic acid) (as per USP)

Anastrozole Diamide Impurity

CAT No: CL-ANSZ-14 CAS No: 120512-04-1 Mol Wt: 329.4 Mol F: C17H23N5O2 Inv Status: Custom Synthesis

Chemical Name: 2,2'-{5-[(1H-1,2,4-Triazol-1-yl)methyl]-1,3-phenylene}bis(2-methylpropanamide) (as per USP)

Anastrozole Monoacid Impurity

CAT No: CL-ANSZ-15 CAS No: 1338800-82-0 Mol Wt: 312.4 Mol F: C17H20N4O2 Inv Status: Custom Synthesis

Chemical Name: 2-{3-[(1H-1,2,4-Triazol-1-yl)methyl]-5-(2-cyanopropan-2-yl)phenyl}-2-methylpropanoic acid (as per USP)

Anastrozole Monoacid Monoamide

CAT No: CL-ANSZ-16 CAS No: 2469244-33-3 Mol Wt: 330.4 Mol F: C17H22N4O3 Inv Status: Custom Synthesis

Chemical Name: 2-{3-[(1H-1,2,4-Triazol-1-yl)methyl]-5-(1-amino-2-methyl-1-oxopropan-2-yl)phenyl}-2-methylpropanoic acid (as per USP)

Anastrozole 1,3-Dicyanomethyl Impurity

CAT No: CL-ANSZ-17 CAS No: 120511-74-2 Mol Wt: 170.2 Mol F: C11H10N2 Inv Status: Custom Synthesis

Chemical Name: 3-Cyanomethyl-5-methyl-phenylacetonitrile

Anastrozole 1,3-Dibromomethyl Impurity

CAT No: CL-ANSZ-19 CAS No: 19294-04-3 Mol Wt: 278 Mol F: C9H10Br2 Inv Status: Custom Synthesis

Chemical Name: 1,3-Bis(bromomethyl)-5-methylbenzene

Anastrozole Formyl Impurity

CAT No: CL-ANSZ-20 CAS No: 120511-89-9 Mol Wt: 240.3 Mol F: C15H16N2O Inv Status: Custom Synthesis

Chemical Name: 3,5-Bis(2-cyanoprop-2-yl)benzaldehyde

Anastrozole Impurity B

CAT No: CL-ANSZ-21 CAS No: 2518116-15-7 Mol Wt: 291.2 Mol F: C14H15BrN2 Inv Status: Custom Synthesis

Chemical Name: 2-(3-(Bromomethyl)-5-(1-cyanoethyl)phenyl)-2-methylpropanenitrile

Anastrozole Impurity C

CAT No: CL-ANSZ-22 CAS No: NA Mol Wt: 360.4 Mol F: C19H20N8 Inv Status: Custom Synthesis

Chemical Name: 2,2'-(5-((1H-1,2,4-Triazol-1-yl)(4H-1,2,4-triazol-4-yl)methyl)-1,3-phenylene)bis(2-methylpropanenitrile)

Anastrozole Impurity 1

CAT No: CL-ANSZ-23 CAS No: 105371-71-9 Mol Wt: 159.2 Mol F: C11H13N Inv Status: Custom Synthesis

Chemical Name: 2-(3,4-Dimethylphenyl)propanenitrile

Anastrozole Impurity 2

CAT No: CL-ANSZ-24 CAS No: 120512-36-9 Mol Wt: 252.2 Mol F: C12H14BrN Inv Status: Custom Synthesis

Chemical Name: 3-(Bromomethyl)-a,a,5-trimethyl-benzeneacetonitrile

Anastrozole Impurity 3

CAT No: CL-ANSZ-25 CAS No: 120512-37-0 Mol Wt: 198.3 Mol F: C13H14N2 Inv Status: Custom Synthesis

Chemical Name: a,a,5-Trimethyl-1,3-benzenediacetonitrile

Anastrozole Impurity 4

CAT No: CL-ANSZ-26 CAS No: 120512-38-1 Mol Wt: 212.3 Mol F: C14H16N2 Inv Status: Custom Synthesis

Chemical Name: 2-(3-(1-Cyanoethyl)-5-methylphenyl)-2-methylpropanenitrile

Anastrozole

CAT No: CL-ANSZ-27 CAS No: 120511-73-1 Mol Wt: 293.37 Mol F: C17H19N5 Inv Status: Custom Synthesis

Chemical Name: 2,2'-[5-(1H-1,2,4-Triazol-1-ylmethyl)benzene-1,3-diyl]bis(2-methylpropanenitrile)

1,2,4-Triazol-4-Amine

CAT No: CL-ANSZ-28 CAS No: 584-13-4 Mol Wt: 84.1 Mol F: C2H4N4 Inv Status: Custom Synthesis

Chemical Name: 1,2,4-Triazol-4-Amine

4-Aminoanastrozolium Bromide

CAT No: CL-ANSZ-29 CAS No: 906813-01-2 Mol Wt: 309.4 : 79.9 Mol F: C17H21N6 : Br Inv Status: Custom Synthesis

Chemical Name: 4H-1,2,4-Triazolium, 4-amino-1-[[3,5-bis(1-cyano-1-methylethyl)phenyl]methyl]-, bromide

3,5-Dimethylbenzene

CAT No: CL-ANSZ-30 CAS No: 27129-86-8 Mol Wt: 199.1 Mol F: C9H11Br Inv Status: Custom Synthesis

Chemical Name: 3,5-Dimethylbenzene

3,5-Dimethylphenylacetonitrile

CAT No: CL-ANSZ-31 CAS No: 39101-54-7 Mol Wt: 145.2 Mol F: C10H11N Inv Status: Custom Synthesis

Chemical Name: 3,5-Dimethylphenylacetonitrile

Anastrozole EP Impurity F (Sodium salt)

CAT No: CL-ANSZ-33 CAS No: 657-84-1 Mol Wt: 171.2 : 23.0 Mol F: C7H7O3S : Na Inv Status: Custom Synthesis

Chemical Name: Sodium 4-methylbenzenesulfonate

Anastrozole Hydrobromide

CAT No: CL-ANSZ-34 CAS No: 876514-43-1 Mol Wt: 293.4 : 80.9 Mol F: C17H19N5 : HBr Inv Status: Custom Synthesis

Chemical Name: 2,2'-[5-(1H-1,2,4-Triazol-1-ylmethyl)benzene-1,3-diyl]bis(2-methylpropanenitrile) hydrobromide

Anastrozole Hydrochloride

CAT No: CL-ANSZ-35 CAS No: 868771-60-2 Mol Wt: 293.4 : 36.5 Mol F: C17H19N5 : HCl Inv Status: Custom Synthesis

Chemical Name: 2,2'-[5-(1H-1,2,4-Triazol-1-ylmethyl)benzene-1,3-diyl]bis(2-methylpropanenitrile) hydrochloride

2-(3,5-Dimethylphenyl)-2-methylpropionitrile

CAT No: CL-ANSZ-36 CAS No: 93748-07-3 Mol Wt: 173.3 Mol F: C12H15N Inv Status: Custom Synthesis

Chemical Name: 2-(3,5-Dimethylphenyl)-2-methylpropionitrile

Anastrozole Impurity 5

CAT No: CL-ANSZ-37 CAS No: 1186102-55-5 Mol Wt: 360.4 Mol F: C19H20N8 Inv Status: Custom Synthesis

Chemical Name: 2,2'-(5-(di(1H-1,2,4-triazol-1-yl)methyl)-1,3-phenylene)bis(2-methylpropanenitrile)

Anastrozole Impurity 6

CAT No: CL-ANSZ-38 CAS No: 1301724-97-9 Mol Wt: 323.4 Mol F: C19H21N3O2 Inv Status: Custom Synthesis

Chemical Name: 2,2'-[5-[(2,5-Dioxotetrahydro-1H-1-pyrrolyl)methyl]-1,3- phenylene]di(2-methylpropionitrile)

Anastrozole Impurity 7

CAT No: CL-ANSZ-39 CAS No: NA Mol Wt: 372.3 Mol F: C17H18BrN5 Inv Status: Custom Synthesis

Chemical Name: 2,2'-(5-(Bromo(1H-1,2,4-triazol-1-yl)methyl)-1,3-phenylene)bis(2-methylpropanenitrile)

Anastrozole Impurity 8

CAT No: CL-ANSZ-40 CAS No: NA Mol Wt: 198.3 Mol F: C13H14N2 Inv Status: Custom Synthesis

Chemical Name: 2,2'-(5-Methyl-1,3-phenylene)dipropanenitrile

Anastrozole Impurity 9

CAT No: CL-ANSZ-41 CAS No: 3673-68-5 Mol Wt: 250.4 Mol F: C16H26O2 Inv Status: Custom Synthesis

Chemical Name: 2,6-Di-tert-butyl-4-(2-hydroxyethyl)phenol

Anastrozole D12

CAT No: CL-ANSZ-42 CAS No: 120512-32-5 Mol Wt: 305.5 Mol F: C17H7D12N5 Inv Status: Custom Synthesis

Chemical Name: 2,2'-(5-((1H-1,2,4-Triazol-1-yl)methyl)-1,3-phenylene)bis(2-(methyl-d3)propanenitrile-3,3,3-d3)

Anastrozole D3 Dimer Impurity

CAT No: CL-ANSZ-43 CAS No: 1329809-14-4 Mol Wt: 520.7 Mol F: C30H28D3N9 Inv Status: Custom Synthesis

Chemical Name: 2,2'-((2-Cyanopropane-1,2-diyl-3,3,3-d3)bis(5-((1H-1,2,4-triazol-1-yl)methyl)-3,1-phenylene))bis(2-methylpropanenitrile)

Anastrozole 13C4

CAT No: CL-ANSZ-44 CAS No: NA Mol Wt: 297.3 Mol F: C1313C4H19N5 Inv Status: Custom Synthesis

Chemical Name: 2,2'-(5-((1H-1,2,4-triazol-1-yl)methyl)-1,3-phenylene)bis(2-(methyl-13C)propanenitrile-3-13C)

Type:Impurity Reference Standard

Total Products: 41

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