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

Almotriptan

CAT No: CL-AMTP-01 CAS No: 154323-57-6 Mol Wt: 335.5 Mol F: C17H25N3O2S Inv Status: Custom Synthesis

Chemical Name: N,N-Dimethyl-2-(5-((pyrrolidin-1-ylsulfonyl)methyl)-1H-indol-3-yl)ethan-1-amine

Almotriptan EP Impurity C

CAT No: CL-AMTP-02 CAS No: 1018676-02-2 Mol Wt: 365.5 Mol F: C18H27N3O3S Inv Status: Custom Synthesis

Chemical Name: [3-[2-(Dimethylamino)ethyl]-5-[(pyrrolidine-1-sulfonyl)methyl]-1H-indol-1-yl]methanol

Almotriptan EP Impurity D (Oxalate)

CAT No: CL-AMTP-03 CAS No: 1018676-03-3 Mol Wt: 307.4 : 90.0 Mol F: C15H21N3O2S : C2H2O4 Inv Status: Custom Synthesis

Chemical Name: 2-{5-[(Pyrrolidin-1-ylsulfonyl)methyl]-1H-indol-3-yl}ethanamine oxalate (As per USP)

Almotriptan EP Impurity A

CAT No: CL-AMTP-04 CAS No: 334981-12-3 Mol Wt: 321.4 Mol F: C16H23N3O2S Inv Status: Custom Synthesis

Chemical Name: N-Methyl-2-(5-((pyrrolidin-1-ylsulfonyl)methyl)-1H-indol-3-yl)ethan-1-amine (As per EP or USP)

Almotriptan EP Impurity E

CAT No: CL-AMTP-05 CAS No: 603137-43-5 Mol Wt: 351.5 Mol F: C17H25N3O3S Inv Status: Custom Synthesis

Chemical Name: N,N-Dimethyl-2-(5-((pyrrolidin-1-ylsulfonyl)methyl)-1H-indol-3-yl)ethan-1-amine oxide

Almotriptan N-Isopropyl Impurity

CAT No: CL-AMTP-06 CAS No: NA Mol Wt: 363.5 : 132.1 Mol F: C19H29N3O2S : C5H8O4 Inv Status: Custom Synthesis

Chemical Name: N-Methyl-N-(2-(5-((pyrrolidin-1-ylsulfonyl)methyl)-1H-indol-3-yl)ethyl)propan-2-amine 2-methylsuccinate

Almotriptan EP Impurity C (2-hydroxysuccinate)

CAT No: CL-AMTP-07 CAS No: NA Mol Wt: 365.5 : 134.1 Mol F: C18H27N3O3S : C4H6O5 Inv Status: Custom Synthesis

Chemical Name: (3-(2-(Dimethylamino)ethyl)-5-((pyrrolidin-1-ylsulfonyl)methyl)-1H-indol-1-yl)methanol 2-hydroxysuccinate

Spiro Almotriptan

CAT No: CL-AMTP-08 CAS No: 1309457-18-8 Mol Wt: 351.5 Mol F: C17H25N3O3S Inv Status: Custom Synthesis

Chemical Name: 1'-Methyl-5-((pyrrolidin-1-ylsulfonyl)methyl)spiro[indoline-3,3'-pyrrolidin]-2-ol

Almotriptan Aniline Precursor

CAT No: CL-AMTP-09 CAS No: 334981-10-1 Mol Wt: 240.3 Mol F: C11H16N2O2S Inv Status: Custom Synthesis

Chemical Name: 4-((Pyrrolidin-1-ylsulfonyl)methyl)aniline

Almotriptan EP Impurity A (Mesylate salt)

CAT No: CL-AMTP-10 CAS No: NA Mol Wt: 321.4 : 96.1 Mol F: C16H23N3O2S : CH4O3S Inv Status: Custom Synthesis

Chemical Name: N-Methyl-2-(5-((pyrrolidin-1-ylsulfonyl)methyl)-1H-indol-3-yl)ethan-1-amine methanesulfonate

Almotriptan EP Impurity E (Malate salt)

CAT No: CL-AMTP-11 CAS No: 1189348-94-4 Mol Wt: 351.5 : 134.1 Mol F: C17H25N3O3S : C4H6O5 Inv Status: Custom Synthesis

Chemical Name: N,N-dimethyl-2-(5-((pyrrolidin-1-ylsulfonyl)methyl)-1H-indol-3-yl)ethanamine oxide 2-hydroxysuccinate

Almotriptan EP Impurity F

CAT No: CL-AMTP-12 CAS No: 2749821-93-8 Mol Wt: 363.5 Mol F: C19H29N3O2S Inv Status: Custom Synthesis

Chemical Name: N-Methyl-N-[2-[5-[(pyrrolidine-1-sulfonyl)methyl]-1H-indol-3-yl]ethyl]propan-2-amine

Almotriptan Hydrazine Precursor

CAT No: CL-AMTP-13 CAS No: 334981-11-2 Mol Wt: 291.8 : 36.5 Mol F: C11H18ClN3O2S : HCl Inv Status: Custom Synthesis

Chemical Name: 1-((4-Hydrazinylbenzyl)sulfonyl)pyrrolidine hydrochloride

Almotriptan EP Impurity B (Malate salt)

CAT No: CL-AMTP-14 CAS No: NA Mol Wt: 535.8 : 134.1 Mol F: C30H41N5O2S : C4H6O5 Inv Status: Custom Synthesis

Chemical Name: 2-[2-[[3-[2-(Dimethylamino)ethyl]-1H-indol-5-yl]methyl]-5-[(pyrrolidine-1-sulfonyl)methyl]-1H-indol-3-yl]-N,N-dimethylethan-1-amine malate

2-Hydroxyalmotriptan

CAT No: CL-AMTP-15 CAS No: 1309457-19-9 Mol Wt: 351.5 Mol F: C17H25N3O3S Inv Status: Custom Synthesis

Chemical Name: 3-(2-(Dimethylamino)ethyl)-5-((pyrrolidin-1-ylsulfonyl)methyl)-1H-indol-2-ol

Almotriptan EP Impurity F (Methyl Succinate salt)

CAT No: CL-AMTP-16 CAS No: NA Mol Wt: 363.5 : 132.1 Mol F: C19H29N3O2S : C5H8O4 Inv Status: Custom Synthesis

Chemical Name: N-Methyl-N-(2-(5-((pyrrolidin-1-ylsulfonyl)methyl)-1H-indol-3-yl)ethyl)propan-2-amine 2-methylsuccinate

Almotriptan Malate

CAT No: CL-AMTP-17 CAS No: 181183-52-8 Mol Wt: 335.5 : 134.1 Mol F: C17H25N3O2S : C4H6O5 Inv Status: Custom Synthesis

Chemical Name: N,N-Dimethyl-2-(5-((pyrrolidin-1-ylsulfonyl)methyl)-1H-indol-3-yl)ethan-1-amine malate

Almotriptan Methyl Tetrahydro Indole Impurity

CAT No: CL-AMTP-18 CAS No: 334981-31-6 Mol Wt: 333.5 Mol F: C17H23N3O2S Inv Status: Custom Synthesis

Chemical Name: 2-Methyl-6-((pyrrolidin-1-ylsulfonyl)methyl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole

Almotriptan Tetrahydro Indole Impurity

CAT No: CL-AMTP-19 CAS No: 334981-14-5 Mol Wt: 319.4 Mol F: C16H21N3O2S Inv Status: Custom Synthesis

Chemical Name: 6-((Pyrrolidin-1-ylsulfonyl)methyl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole

Almotriptan Impurity 1

CAT No: CL-AMTP-20 CAS No: 2387405-44-7 Mol Wt: 420.9 Mol F: C21H25ClN2O5 Inv Status: Custom Synthesis

Chemical Name: 3-Ethyl 5-methyl 4-(2-chlorophenyl)-6-methyl-2-(morpholin-2-yl)-1,4-dihydropyridine-3,5-dicarboxylate

Almotriptan Impurity 2

CAT No: CL-AMTP-21 CAS No: 1092797-25-5 Mol Wt: 343.9 Mol F: C15H22ClN3O2S Inv Status: Custom Synthesis

Chemical Name: (E)-1-(4-(2-(4-Chlorobutylidene)hydrazinyl)benzylsulfonyl)pyrrolidine

Almotriptan Impurity 3

CAT No: CL-AMTP-22 CAS No: NA Mol Wt: 326.8 Mol F: C15H19ClN2O2S Inv Status: Custom Synthesis

Chemical Name: 3-(2-Chloroethyl)-5-((pyrrolidin-1-ylsulfonyl)methyl)-1H-indole

Almotriptan Impurity 4

CAT No: CL-AMTP-23 CAS No: 340041-91-0 Mol Wt: 270.3 Mol F: C11H14N2O4S Inv Status: Custom Synthesis

Chemical Name: 1-((4-Nitrobenzyl)sulfonyl)pyrrolidine

Almotriptan D3

CAT No: CL-AMTP-24 CAS No: NA Mol Wt: 338.5 Mol F: C17H22D3N3O2S Inv Status: Custom Synthesis

Chemical Name: N-Methyl-N-(methyl-d3)-2-(5-((pyrrolidin-1-ylsulfonyl)methyl)-1H-indol-3-yl)ethan-1-amine

Almotriptan D6

CAT No: CL-AMTP-25 CAS No: 1020764-56-0 Mol Wt: 341.5 Mol F: C17H19D6N3O2S Inv Status: Custom Synthesis

Chemical Name: N,N-bis(methyl-d3)-2-(5-((pyrrolidin-1-ylsulfonyl)methyl)-1H-indol-3-yl)ethan-1-amine

Type:Impurity Reference Standard

Total Products: 25

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