CAS Number: 19893-78-8

Alternate CAS#:

Chemical Name: Caffeine Impurity 3

Molecular Formula: C7H10N4O3

Molecular Weight: 198.18

CAS Number: 54536-15-1 (free acid)

Alternate CAS#:

Chemical Name: Caffeine Impurity 1 Sodium Salt

Molecular Formula: C8H11N4O3. Na

Molecular Weight: 211.20 22.99

CAS Number: 54536-15-1 (free acid)

Alternate CAS#:

Chemical Name: Caffeine Impurity 1 Ammonium Salt

Molecular Formula: C8H11N4O3. NH4

Molecular Weight: 211.20 18.04

CAS Number: 611-59-6

Alternate CAS#:

Chemical Name: Caffeine EP Impurity F (Paraxanthine)

Molecular Formula: C7H8N4O2

Molecular Weight: 180.17

CAS Number: 107605-95-8

Alternate CAS#:

Chemical Name: Caffeine EP Impurity E HCl (Caffeidine HCl)

Molecular Formula: C7H12N4O. HCl

Molecular Weight: 168.20 36.46

CAS Number: 519-32-4

Alternate CAS#:

Chemical Name: Caffeine EP Impurity C (Isocaffeine)

Molecular Formula: C8H10N4O2

Molecular Weight: 194.19

CAS Number: 7597-60-6

Alternate CAS#:

Chemical Name: Caffeine EP Impurity B (Theophylline EP Impurity C)

Molecular Formula: C7H10N4O3

Molecular Weight: 198.18

CAS Number: 72238-85-8

Alternate CAS#:

Chemical Name: Caffeine-d9

Molecular Formula: C8HD9N4O2

Molecular Weight: 203.25

CAS Number: 26351-04-2

Alternate CAS#:

Chemical Name: Caffeine-d3

Molecular Formula: C8H7D3N4O2

Molecular Weight: 197.21

CAS Number: 78072-66-9

Alternate CAS#:

Chemical Name: Caffeine-13C3

Molecular Formula: C513C3H10N4O2

Molecular Weight: 197.16

CAS Number: 58-08-2

Alternate CAS#:

Chemical Name: Caffeine (Theophylline EP Impurity A)

Molecular Formula: C8H10N4O2

Molecular Weight: 194.19

CAS Number: 202282-98-2

Alternate CAS#:

Chemical Name: Caffeine-(3-methyl-13C)

Molecular Formula: 13C C7H10N4O2

Molecular Weight: 195.18