Impurity Reference Standard - Products

Caffeine

CAT No: CL-CFN-01 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 ; 1,3,7-Trimethylxanthine ; 7-Methyltheophylline

Caffeine EP Impurity A

CAT No: CL-CFN-02 CAS No: 58-55-9 Mol Wt: 180.2 Mol F: C7H8N4O2 Inv Status: In Stock

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

Caffeine EP Impurity B

CAT No: CL-CFN-03 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

Caffeine EP Impurity C

CAT No: CL-CFN-04 CAS No: 519-32-4 Mol Wt: 194.2 Mol F: C8H10N4O2 Inv Status: Custom Synthesis

Chemical Name: 1,3,9-Trimethyl-3,9-dihydro-1H-purine-2,6-dione ; 1,3,9-Trimethylxanthine ; 9-Methyltheophylline

Caffeine EP Impurity D

CAT No: CL-CFN-05 CAS No: 83-67-0 Mol Wt: 180.2 Mol F: C7H8N4O2 Inv Status: In Stock

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

Caffeine EP Impurity E

CAT No: CL-CFN-06 CAS No: 20041-90-1 Mol Wt: 168.2 Mol F: C7H12N4O Inv Status: In Stock

Chemical Name: N,1-Dimethyl-4-(methylamino)-1H-imidazole-5-carboxamide

Caffeine EP Impurity F

CAT No: CL-CFN-07 CAS No: 611-59-6 Mol Wt: 180.2 Mol F: C7H8N4O2 Inv Status: Custom Synthesis

Chemical Name: 1,7-Dimethyl-3,7-dihydro-1H-purine-2,6-dione ; 1,7-Dimethylxanthine

Caffeine Impurity 1

CAT No: CL-CFN-08 CAS No: NA Mol Wt: 200.2 Mol F: C7H12N4O3 Inv Status: Custom Synthesis

Chemical Name: 1,3-Dimethyl-4-amino-5-formylaminouracil

Caffeine Impurity 2

CAT No: CL-CFN-09 CAS No: NA Mol Wt: 197.2 : 23.0 Mol F: C7H9N4O3 : Na Inv Status: Custom Synthesis

Chemical Name: Sodium 4-(1,3-dimethylureido)-1H-imidazole-5-carboxylate

Caffeine Impurity 3

CAT No: CL-CFN-10 CAS No: 104497-09-8 Mol Wt: 157.2 Mol F: C6H11N3O2 Inv Status: Custom Synthesis

Chemical Name: 6-Amino-1,3-dimethyldihydropyrimidine-2,4(1H,3H)-dione

Caffeine Impurity 4

CAT No: CL-CFN-11 CAS No: 6642-31-5 Mol Wt: 155.2 Mol F: C6H9N3O2 Inv Status: Custom Synthesis

Chemical Name: 6-Amino-1,3-dimethylpyrimidine-2,4(1H,3H)-dione