Impurity Reference Standard - Products

Trimethoprim

CAT No: CL-TOP-01 CAS No: 738-70-5 Mol Wt: 290.3 Mol F: C14H18N4O3 Inv Status: Custom Synthesis

Chemical Name: 5-(3,4,5-Trimethoxybenzyl)pyrimidine-2,4-diamine

Trimethoprim EP Impurity A

CAT No: CL-TOP-02 CAS No: 213745-86-9 Mol Wt: 304.4 Mol F: C15H20N4O3 Inv Status: Custom Synthesis

Chemical Name: N2-methyl-5-(3,4,5-trimethoxybenzyl)pyrimidine-2,4-diamine

Trimethoprim EP Impurity B

CAT No: CL-TOP-03 CAS No: 30806-86-1 Mol Wt: 304.3 Mol F: C14H16N4O4 Inv Status: Custom Synthesis

Chemical Name: (2,4-diaminopyrimidin-5-yl)(3,4,5-trimethoxyphenyl)methanone

Trimethoprim EP Impurity C

CAT No: CL-TOP-04 CAS No: 29606-06-2 Mol Wt: 306.3 Mol F: C14H18N4O4 Inv Status: Custom Synthesis

Chemical Name: (RS)-(2,4-diaminopyrimidin-5-yl)(3,4,5-trimethoxyphenyl)methanol

Trimethoprim EP Impurity D

CAT No: CL-TOP-05 CAS No: 92440-76-1 Mol Wt: 291.3 Mol F: C14H17N3O4 Inv Status: Custom Synthesis

Chemical Name: 2-amino-5-(3,4,5-trimethoxybenzyl)pyrimidin-4-ol

Trimethoprim EP Impurity E

CAT No: CL-TOP-06 CAS No: 60729-91-1 Mol Wt: 291.3 Mol F: C14H17N3O4 Inv Status: Custom Synthesis

Chemical Name: 4-amino-5-(3,4,5-trimethoxybenzyl)pyrimidin-2-ol

Trimethoprim EP Impurity F

CAT No: CL-TOP-07 CAS No: 16285-82-8 Mol Wt: 339.2 Mol F: C13H15BrN4O2 Inv Status: Custom Synthesis

Chemical Name: 5-(3-bromo-4,5-dimethoxybenzyl)pyrimidine-2,4-diamine

Trimethoprim EP Impurity G

CAT No: CL-TOP-08 CAS No: 78025-68-0 Mol Wt: 304.4 Mol F: C15H20N4O3 Inv Status: Custom Synthesis

Chemical Name: 5-(4-ethoxy-3,5-dimethoxybenzyl)pyrimidine-2,4-diamine

Trimethoprim EP Impurity H

CAT No: CL-TOP-09 CAS No: 1916-07-0 Mol Wt: 226.6 Mol F: C11H14O5 Inv Status: Custom Synthesis

Chemical Name: methyl 3,4,5-trimethoxybenzoate

Trimethoprim EP Impurity I

CAT No: CL-TOP-10 CAS No: 30078-48-9 Mol Wt: 324.4 Mol F: C19H20N2O3 Inv Status: Custom Synthesis

Chemical Name: 3-(phenylamino)-2-(3,4,5-trimethoxybenzyl)prop-2-enenitrile

Trimethoprim EP Impurity J

CAT No: CL-TOP-11 CAS No: 118-41-2 Mol Wt: 212.2 Mol F: C10H12O5 Inv Status: Custom Synthesis

Chemical Name: 3,4,5-trimethoxybenzoic acid

Trimethoprim EP Impurity K

CAT No: CL-TOP-12 CAS No: 62-53-3 Mol Wt: 93.1 Mol F: C6H7N Inv Status: Custom Synthesis

Chemical Name: Aniline

Trimethoprim Impurity 1

CAT No: CL-TOP-13 CAS No: 93885-69-9 Mol Wt: 292.3 Mol F: C14H16N2O5 Inv Status: Custom Synthesis

Chemical Name: 5-(3,4,5-trimethoxybenzyl)pyrimidine-2,4(1H,3H)-dione

Trimethoprim Impurity 2

CAT No: CL-TOP-14 CAS No: 72920-13-9 Mol Wt: 277.3 Mol F: C13H15N3O4 Inv Status: Custom Synthesis

Chemical Name: 2-amino-5-(4-hydroxy-3,5-dimethoxybenzyl)pyrimidin-4(3H)-one

Trimethoprim Impurity 3

CAT No: CL-TOP-15 CAS No: 92653-78-6 Mol Wt: 304.4 Mol F: C15H20N4O3 Inv Status: Custom Synthesis

Chemical Name: N4-methyl-5-(3,4,5-trimethoxybenzyl)pyrimidine-2,4-diamine

Trimethoprim Impurity 4

CAT No: CL-TOP-16 CAS No: 86-81-7 Mol Wt: 196.2 Mol F: C10H12O4 Inv Status: Custom Synthesis

Chemical Name: 3,4,5-Trimethoxybenzaldehyde

Trimethoprim Impurity 5

CAT No: CL-TOP-17 CAS No: 30077-85-1 Mol Wt: 276.3 Mol F: C15H20N2O3 Inv Status: Custom Synthesis

Chemical Name: (Z)-3-(dimethylamino)-2-(3,4,5-trimethoxybenzyl)acrylonitrile

Trimethoprim Impurity 6

CAT No: CL-TOP-18 CAS No: 1335303-62-2 Mol Wt: 452.5 Mol F: C20H28N4O8 Inv Status: Custom Synthesis

Chemical Name: (2R,3R,4S,5S,6R)-2-((4-amino-5-(3,4,5-trimethoxybenzyl)pyrimidin-2-yl)amino)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol

Trimethoprim Impurity 7

CAT No: CL-TOP-19 CAS No: 21253-58-7 Mol Wt: 276.3 Mol F: C13H16N4O3 Inv Status: Custom Synthesis

Chemical Name: 4-((2,4-Diaminopyrimidin-5-yl)methyl)-2,6-dimethoxyphenol

Type:Impurity Reference Standard

API NAME:Trimethoprim

Total Products: 19

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