Impurity Reference Standard - Products

Theophylline

CAT No: CL-TYLL-01 CAS No: 58-55-9 Mol Wt: 180.2 Mol F: C7H8N4O2 Inv Status: Custom Synthesis

Chemical Name: 1,3-dimethyl-3,9-dihydro-1H-purine-2,6-dione

Etofyllin

CAT No: CL-TYLL-02 CAS No: 519-37-9 Mol Wt: 224.2 Mol F: C9H12N4O3 Inv Status: Custom Synthesis

Chemical Name: 7-(2-hydroxyethyl)-1,3-dimethyl-1H-purine-2,6(3H,7H)-dione

Theophylline EP Impurity A

CAT No: CL-TYLL-03 CAS No: 58-08-2 Mol Wt: 194.2 Mol F: C8H10N4O2 Inv Status: Custom Synthesis

Chemical Name: 1,3,7-trimethyl-3,7-dihydro-1H-purine-2,6-dione

Theophylline EP Impurity B

CAT No: CL-TYLL-04 CAS No: 1076-22-8 Mol Wt: 166.1 Mol F: C6H6N4O2 Inv Status: Custom Synthesis

Chemical Name: 1,3,7-trimethyl-3,7-dihydro-1H-purine-2,6-dione

Theophylline EP Impurity C

CAT No: CL-TYLL-05 CAS No: 7597-60-6 Mol Wt: 198.2 Mol F: C7H10N4O3 Inv Status: Custom Synthesis

Chemical Name: N-(6-amino-1,3-dimethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)formamide

Theophylline EP Impurity D

CAT No: CL-TYLL-06 CAS No: 6736-40-9 Mol Wt: 154.2 : 36.5 Mol F: C6H10N4O : HCl Inv Status: In Stock

Chemical Name: N-methyl-5-(methylamino)-1H-imidazole-4-carboxamide hydrochloride

Theophylline EP Impurity E

CAT No: CL-TYLL-07 CAS No: 944-73-0 Mol Wt: 196.2 Mol F: C7H8N4O3 Inv Status: Custom Synthesis

Chemical Name: 1,3-dimethyl-7,9-dihydro-1H-purine-2,6,8(3H)-trione

Theophylline 7-Acetic Acid

CAT No: CL-TYLL-08 CAS No: 652-37-9 Mol Wt: 238.2 Mol F: C9H10N4O4 Inv Status: Custom Synthesis

Chemical Name: 2-(1,3-dimethyl-2,6-dioxo-1,2,3,6-tetrahydro-7H-purin-7-yl)acetic acid

8-Chlorotheophylline

CAT No: CL-TYLL-09 CAS No: 85-18-7 Mol Wt: 214.6 Mol F: C7H7ClN4O2 Inv Status: Custom Synthesis

Chemical Name: 8-Chloro-1,3-dimethyl-3,9-dihydro-1H-purine-2,6-dione compound with 2-(benzhydryloxy)-N,N-dimethylethan-1-amine (1:1)

8-Benzyl Theophylline

CAT No: CL-TYLL-10 CAS No: 2879-15-4 Mol Wt: 270.3 Mol F: C14H14N4O2 Inv Status: Custom Synthesis

Chemical Name: 8-benzyl-1,3-dimethyl-3,9-dihydro-1H-purine-2,6-dione

Theophylline Impurity 2

CAT No: CL-TYLL-11 CAS No: 5614-53-9 Mol Wt: 222.2 Mol F: C9H10N4O3 Inv Status: Custom Synthesis

Chemical Name: 2-(1,3-dimethyl-2,6-dioxo-1,2,3,6-tetrahydro-7H-purin-7-yl)acetaldehyde

Theophylline Impurity 4

CAT No: CL-TYLL-12 CAS No: 1174289-18-9 Mol Wt: 266.3 Mol F: C11H14N4O4 Inv Status: Custom Synthesis

Chemical Name: 9-((1,3-dioxolan-2-yl)methyl)-1,3-dimethyl-3,9-dihydro-1H-purine-2,6-dione

Theophylline Impurity 6

CAT No: CL-TYLL-13 CAS No: 81781-90-0 Mol Wt: 332.8 Mol F: C16H17ClN4O2 Inv Status: Custom Synthesis

Chemical Name: 8-benzyl-7-(2-chloroethyl)-1,3-dimethyl-3,7-dihydro-1H-purine-2,6-dione

Theophylline Impurity 7

CAT No: CL-TYLL-14 CAS No: 60797-68-4 Mol Wt: 198.2 Mol F: C7H10N4O3 Inv Status: Custom Synthesis

Chemical Name: N-(5-amino-1,3-dimethyl-2,6-dioxo-1,2,3,6-tetrahydropyrimidin-4-yl)formamid

Theophylline Impurity 8

CAT No: CL-TYLL-15 CAS No: 5309-70-6 Mol Wt: 165 Mol F: C4H5BrO2 Inv Status: Custom Synthesis

Chemical Name: vinyl 2-bromoacetate

Theophylline Impurity 9

CAT No: CL-TYLL-16 CAS No: 42772-85-0 Mol Wt: 216.3 Mol F: C9H12O4S Inv Status: Custom Synthesis

Chemical Name: 2-hydroxyethyl 4-methylbenzenesulfonate

Theophylline Impurity 10

CAT No: CL-TYLL-17 CAS No: 40258-78-4 Mol Wt: 176 Mol F: C4H7BrO2 Inv Status: Custom Synthesis

Chemical Name: 1-bromoethyl acetate

Theophylline Impurity 11

CAT No: CL-TYLL-18 CAS No: 24442-57-7 Mol Wt: 245.9 Mol F: C4H6Br2O2 Inv Status: Custom Synthesis

Chemical Name: 1,2-dibromoethyl acetate

Theophylline Impurity 12

CAT No: CL-TYLL-19 CAS No: NA Mol Wt: 264.2 Mol F: C11H12N4O4 Inv Status: Custom Synthesis

Chemical Name: Vinyl 2-(1,3-dimethyl-2,6-dioxo-1,2,3,6-tetrahydro-7H-purin-7-yl)acetate

Theophylline Impurity 13

CAT No: CL-TYLL-20 CAS No: 427895-68-9 Mol Wt: 182.2 Mol F: C7H10N4O2 Inv Status: Custom Synthesis

Chemical Name: 3,7-dimethyl-3,4,5,7-tetrahydro-1H-purine-2,6-dione

Theophylline Related Compound D

CAT No: CL-TYLL-21 CAS No: 116131-08-9 Mol Wt: 208.65 Mol F: C16H16N4O5S2 Inv Status: Custom Synthesis

Chemical Name: N-Methyl-5-(methylamino)-1H-imidazole-4-carboxamide hydrochloride monohydrate

7-Methylxanthin

CAT No: CL-TYLL-22 CAS No: 552-62-5 Mol Wt: 166.1 Mol F: C6H6N4O2 Inv Status: Custom Synthesis

Chemical Name: 7-Methyl-3,7-dihydro-1H-purine-2,6-dione

Theophylline Hydrochloride Monohydrate

CAT No: CL-TYLL-23 CAS No: 1604876-32-5 Mol Wt: 180.2 : 36.5 : 18.0 Mol F: C7H8N4O2 : HCl : H2O Inv Status: Custom Synthesis

Chemical Name: 1,3-dimethyl-3,9-dihydro-1H-purine-2,6-dione hydrochloride monohydrate

Theophylline Impurity 17

CAT No: CL-TYLL-24 CAS No: NA Mol Wt: 222.2 : 240.2 Mol F: C9H10N4O3 : C9H12N4O4 Inv Status: Custom Synthesis

Chemical Name: 2-(1,3-Dimethyl-2,6-dioxo-1,2,3,6-tetrahydro-7H-purin-7-yl)acetaldehyde compound with 7-(2,2-dihydroxyethyl)-1,3-dimethyl-3,7-dihydro-1H-purine-2,6-dione (1:1)

Theophylline Impurity 18

CAT No: CL-TYLL-25 CAS No: 39726-70-0 Mol Wt: 416.4 Mol F: C17H20N8O5 Inv Status: Custom Synthesis

Chemical Name: 7,7'-(2-Hydroxypropane-1,3-diyl)bis(1,3-dimethyl-3,7-dihydro-1H-purine-2,6-dione)

Theophylline Impurity 20

CAT No: CL-TYLL-26 CAS No: NA Mol Wt: 324.3 Mol F: C13H16N4O6 Inv Status: Custom Synthesis

Chemical Name: 7-(2,3-Dihydroxy-6-(hydroxymethyl)-3,6-dihydro-2H-pyran-3-yl)-1,3-dimethyl-3,7-dihydro-1H-purine-2,6-dione

Sodium Theophylline

CAT No: CL-TYLL-27 CAS No: 3485-82-3 Mol Wt: 179.2 : 23.0 Mol F: C7H7N4O2 : Na Inv Status: Custom Synthesis

Chemical Name: Sodium 1,3-dimethyl-2,6-dioxo-1,2,3,6-tetrahydropurin-7-ide

Theophylline Impurity 19

CAT No: CL-TYLL-28 CAS No: 6136-37-4 Mol Wt: 166.1 Mol F: C6H6N4O2 Inv Status: Custom Synthesis

Chemical Name: 1-Methyl-3,7-dihydro-1H-purine-2,6-dione

8-Chlorotheophylline-D6

CAT No: CL-TYLL-29 CAS No: 1346598-95-5 Mol Wt: 220.6 Mol F: C7HD6ClN4O2 Inv Status: Custom Synthesis

Chemical Name: ?8-Chloro-3,9-dihydro-1,3-(dimethyl-d6)-1H-Purine-2,6-dione

Theophylline D6

CAT No: CL-TYLL-30 CAS No: 117490-39-8 Mol Wt: 186.2 Mol F: C7H2D6N4O2 Inv Status: Custom Synthesis

Chemical Name: 1,3-bis(methyl-d3)-3,9-dihydro-1H-purine-2,6-dione

Type:Impurity Reference Standard

API NAME:Theophylline

Total Products: 30

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