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

Norethindrone Acetate
CAT No: CL-NDAT-01 CAS No: 51-98-9 Mol Wt: 340.5 Mol F: C22H28O3 Inv Status: Custom Synthesis
Chemical Name: 3-Oxo-19-nor-17?-pregn-4-en-20-yn-17-yl acetate ; 17-Hydroxy-19-nor-17?-pregn-4-en-20-yn-3-one acetate (as per USP)
Norethindrone Acetate EP Impurity A
CAT No: CL-NDAT-02 CAS No: 68-22-4 Mol Wt: 298.4 Mol F: C20H26O2 Inv Status: Custom Synthesis
Chemical Name: 17?-Hydroxy-17?-ethynylestr-4-en-3-one ; 17-hydroxy-19-nor-17?-pregn-4-en-20-yn-3-one (as per USP)
Norethindrone Acetate EP Impurity B
CAT No: CL-NDAT-03 CAS No: 19637-28-6 Mol Wt: 340.5 Mol F: C22H28O3 Inv Status: Custom Synthesis
Chemical Name: 3-Oxo-19-nor-17?-pregn-5(10)-en-20-yn-17-yl acetate
Norethindrone Acetate EP Impurity C
CAT No: CL-NDAT-04 CAS No: 1175129-26-6 Mol Wt: 340.5 Mol F: C22H28O3 Inv Status: Custom Synthesis
Chemical Name: 3-Oxo-19-nor-17?-pregn-5-en-20-yn-17-yl acetate
Norethindrone Acetate EP Impurity D
CAT No: CL-NDAT-05 CAS No: NA Mol Wt: 382.5 Mol F: C24H30O4 Inv Status: Custom Synthesis
Chemical Name: 6?-Acetoxy-17?-hydroxy-19-norpregn-4-en-20-yn-3-one 17-acetate
Norethindrone Acetate EP Impurity E
CAT No: CL-NDAT-06 CAS No: 66964-58-7 Mol Wt: 358.5 Mol F: C22H30O4 Inv Status: Custom Synthesis
Chemical Name: 3,20-Dioxo-19-nor-17?-pregn-4-en-17-yl acetate
Norethindrone Acetate EP Impurity F
CAT No: CL-NDAT-07 CAS No: 6856-27-5 Mol Wt: 356.5 Mol F: C22H28O4 Inv Status: Custom Synthesis
Chemical Name: 6?-Hydroxy-3-oxo-19-nor-17a-pregn-4-en-20-yn-17-yl acetate
Norethindrone Acetate EP Impurity G
CAT No: CL-NDAT-08 CAS No: 438244-27-0 Mol Wt: 354.4 Mol F: C22H26O4 Inv Status: Custom Synthesis
Chemical Name: 3,6-Dioxo-19-nor-17?-pregn-4-en-20-yn-17-yl acetate
Norethindrone Acetate EP Impurity H
CAT No: CL-NDAT-09 CAS No: 2417092-17-0 Mol Wt: 382.5 Mol F: C25H34O3 Inv Status: Custom Synthesis
Chemical Name: 3-(Propan-2-yloxy)-19-nor-17?-pregna-3,5-dien-20-yn-17-yl acetate
Norethindrone Acetate EP Impurity I
CAT No: CL-NDAT-10 CAS No: 50717-99-2 Mol Wt: 368.5 Mol F: C24H32O3 Inv Status: Custom Synthesis
Chemical Name: 3-Ethoxy-17?-ethynylestr-3,5-dien-17?-ol acetate
Norethindrone Acetate 6,7-Dehydro Impurity
CAT No: CL-NDAT-12 CAS No: 106765-04-2 Mol Wt: 338.4 Mol F: C22H26O3 Inv Status: Custom Synthesis
Chemical Name: 17?-Hydroxy-17?-ethynylestr-4,6-dien-3-one acetate
Norethindrone Acetate 6-Alpha-Hydroxy Impurity
CAT No: CL-NDAT-13 CAS No: 6856-28-6 Mol Wt: 356.5 Mol F: C22H28O4 Inv Status: Custom Synthesis
Chemical Name: 6?,17-Dihydroxy-19-nor-17?-pregn-4-en-20-yn-3-one 17-acetate
6,10-Di-Hydroxy Norethindrone Acetate
CAT No: CL-NDAT-14 CAS No: NA Mol Wt: 372.5 Mol F: C22H28O5 Inv Status: Custom Synthesis
Chemical Name: (8S,9S,10S,13S,14S,17R)-17-ethynyl-6,10-dihydroxy-13-methyl-3-oxo-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl acetate
Norethindrone Acetate Dimer
CAT No: CL-NDAT-15 CAS No: NA Mol Wt: 654.9 Mol F: C42H54O6 Inv Status: Custom Synthesis
Chemical Name: (8R,9S,10R,13S,14S,17S)-17-(((8R,9S,10R,13R,14S,16S)-16-acetoxy-13-methyl-3-oxo-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-16-yl)ethynyl)-13-methyl-3-oxo-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl acetate
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