Caffeine

Caffeine is a methylxanthine CNS stimulant that antagonises adenosine receptors, used pharmaceutically in combination analgesics, as a neonatal apnoea therapy (citrated form), and as a performance-enhancing nutraceutical. Simson Pharma's Caffeine reference standard and impurities support compendial testing across these diverse pharmaceutical and nutraceutical applications.

Simson Pharma Global Ltd. (UK) and Simson Pharma Global LLC (USA) supply high-quality Caffeine Reference Standards, pharmacopoeial reference materials, and its related impurities to pharmaceutical manufacturers, CROs, analytical laboratories, universities, and regulatory organizations worldwide. To service the Europe and America market efficiently, Simson Pharma Limited has set up Simson Pharma Global Ltd. in United Kingdom and Simson Pharma Global LLC in USA respectively.

Pharmaceutical Reference Standards / Impurity Standards

Caffeine
Caffeine
  • CAT. No.C310000
  • CAS. No.58-08-2
  • Mol. F.C8H10N4O2
  • Mol. W.194.19 g/mol
  • Stock Status:Instock
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Caffeine EP Impurity F
Caffeine EP Impurity F
  • CAT. No.C310001
  • CAS. No.611-59-6
  • Mol. F.C7H8N4O2
  • Mol. W.180.16 g/mol
  • Stock Status:Instock
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Caffeine EP Impurity E
Caffeine EP Impurity E
  • CAT. No.C310003
  • CAS. No.20041-90-1
  • Mol. F.C7H12N4O
  • Mol. W.168.20 g/mol
  • Stock Status:Under Synthesis
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Caffeidine Nitrate Impurity
Caffeidine Nitrate Impurity
  • CAT. No.C310003A
  • CAS. No.209725-34-8
  • Mol. F.C7H13N5O4
  • Mol. W.231.21 g/mol
  • Stock Status:Instock
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Caffeine EP Impurity E Hydrochloride
Caffeine EP Impurity E Hydrochloride
  • CAT. No.C310003B
  • CAS. No.107605-95-8
  • Mol. F.C7H13ClN4O
  • Mol. W.204.66 g/mol
  • Stock Status:Instock
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Caffeine EP Impurity C
Caffeine EP Impurity C
  • CAT. No.C310005
  • CAS. No.519-32-4
  • Mol. F.C8H10N4O2
  • Mol. W.194.19 g/mol
  • Stock Status:Instock
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1,3-Dimethyluric Acid
1,3-Dimethyluric Acid
  • CAT. No.C310006
  • CAS. No.944-73-0
  • Mol. F.C7H8N4O3
  • Mol. W.196.16 g/mol
  • Stock Status:Instock
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Caffeine Impurity 8
Caffeine Impurity 8
  • CAT. No.C310007
  • CAS. No.33130-55-1
  • Mol. F.C8H12N4O3
  • Mol. W.212.21 g/mol
  • Stock Status:Custom Synthesis
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N-(6-Amino-3-methyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)acetamide
N-(6-Amino-3-methyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)acetamide
  • CAT. No.C310008
  • CAS. No.19893-78-8
  • Mol. F.C7H10N4O3
  • Mol. W.198.18 g/mol
  • Stock Status:Custom Synthesis
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6-Amino-5-(N-formyl-N-methyl)-3-methyluracil
6-Amino-5-(N-formyl-N-methyl)-3-methyluracil
  • CAT. No.C310009
  • CAS. No.55782-76-8
  • Mol. F.C7H10N4O3
  • Mol. W.198.18 g/mol
  • Stock Status:Custom Synthesis
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4-Amino-1,3-dimethyl-2,6-dioxy-5-nitrosopyrimidine
4-Amino-1,3-dimethyl-2,6-dioxy-5-nitrosopyrimidine
  • CAT. No.C310010
  • CAS. No.6632-68-4
  • Mol. F.C6H8N4O3
  • Mol. W.184.15 g/mol
  • Stock Status:Limited Stock
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Caffeine Citrate
Caffeine Citrate
  • CAT. No.C310015
  • CAS. No.69-22-7
  • Mol. F.C14H18N4O9
  • Mol. W.386.32 g/mol
  • Stock Status:Custom Synthesis
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N1-Methylguanosine
N1-Methylguanosine
  • CAT. No.C310016
  • CAS. No.2140-65-0
  • Mol. F.C11H15N5O5
  • Mol. W.297.27 g/mol
  • Stock Status:Custom Synthesis
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N-Nitroso Caffeine Impurity 1
N-Nitroso Caffeine Impurity 1
  • CAT. No.C310017
  • CAS. No.NA
  • Mol. F.C7H7N5O3
  • Mol. W.209.16 g/mol
  • Stock Status:Custom Synthesis
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Mononitroso Caffeidine
Mononitroso Caffeidine
  • CAT. No.C310018
  • CAS. No.145438-96-6
  • Mol. F.C7H11N5O2
  • Mol. W.197.20 g/mol
  • Stock Status:Custom Synthesis
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Dinitroso Caffeidine
Dinitroso Caffeidine
  • CAT. No.C310019
  • CAS. No.145438-97-7
  • Mol. F.C7H10N6O3
  • Mol. W.226.20 g/mol
  • Stock Status:Custom Synthesis
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Caffeine Impurity 4 Sodium Salt
Caffeine Impurity 4 Sodium Salt
  • CAT. No.C310020
  • CAS. No.NA
  • Mol. F.C8H11N4O3.Na
  • Mol. W.234.19 g/mol
  • Stock Status:Custom Synthesis
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N-Nitroso Caffeine Impurity 3
N-Nitroso Caffeine Impurity 3
  • CAT. No.C310021
  • CAS. No.NA
  • Mol. F.C7H7N5O3
  • Mol. W.209.16 g/mol
  • Stock Status:Custom Synthesis
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N-Nitroso Caffeine Impurity 4
N-Nitroso Caffeine Impurity 4
  • CAT. No.C310022
  • CAS. No.NA
  • Mol. F.C6H6N6O4
  • Mol. W.226.15 g/mol
  • Stock Status:Custom Synthesis
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N-Nitroso Caffeine Impurity 6
N-Nitroso Caffeine Impurity 6
  • CAT. No.C310023
  • CAS. No.NA
  • Mol. F.C7H9N5O3
  • Mol. W.211.18 g/mol
  • Stock Status:Custom Synthesis
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N-Nitroso Caffeine Impurity 2
N-Nitroso Caffeine Impurity 2
  • CAT. No.C310024
  • CAS. No.NA
  • Mol. F.C7H7N5O3
  • Mol. W.209.16 g/mol
  • Stock Status:Custom Synthesis
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N-Nitroso Caffeine Impurity 5
N-Nitroso Caffeine Impurity 5
  • CAT. No.C310025
  • CAS. No.NA
  • Mol. F.C7H9N5O3
  • Mol. W.211.18 g/mol
  • Stock Status:Custom Synthesis
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Caffeine Impurity 1
Caffeine Impurity 1
  • CAT. No.C310026
  • CAS. No.NA
  • Mol. F.C7H12N4O3
  • Mol. W.200.20 g/mol
  • Stock Status:Custom Synthesis
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Metabolites

Methylliberine
Methylliberine
  • CAT. No.C310014
  • CAS. No.51168-26-4
  • Mol. F.C9H12N4O3
  • Mol. W.224.22 g/mol
  • Stock Status:Custom Synthesis
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Isotope Labelled Compounds

Caffeine-D3
Caffeine-D3
  • CAT. No.C310002
  • CAS. No.26351-04-2
  • Mol. F.C8H7D3N4O2
  • Mol. W.197.21 g/mol
  • Stock Status:Instock
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Paraxanthine-d6
Paraxanthine-d6
  • CAT. No.C310011
  • CAS. No.117490-41-2
  • Mol. F.C7H2D6N4O2
  • Mol. W.186.20 g/mol
  • Stock Status:Custom Synthesis
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Paraxanthine-D3
Paraxanthine-D3
  • CAT. No.C310012
  • CAS. No.65566-70-3
  • Mol. F.C7H5D3N4O2
  • Mol. W.183.18 g/mol
  • Stock Status:Instock
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Caffeine-Trimethyl-13C3
Caffeine-Trimethyl-13C3
  • CAT. No.C310013
  • CAS. No.78072-66-9
  • Mol. F.C513C3H10N4O2
  • Mol. W.197.15 g/mol
  • Stock Status:Instock
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Caffeine D9
Caffeine D9
  • CAT. No.C310027
  • CAS. No.72238-85-8
  • Mol. F.C8HD9N4O2
  • Mol. W.203.25 g/mol
  • Stock Status:Instock
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