Cimetidine

Cimetidine was the first H2-receptor antagonist to achieve widespread clinical use, blocking histamine-stimulated gastric acid secretion for peptic ulcer disease and GERD, and historically notable for significant CYP450 drug interaction potential. Simson Pharma's Cimetidine reference standard and impurities support compendial testing for this historically significant antisecretory agent.

Simson Pharma Global Ltd. (UK) and Simson Pharma Global LLC (USA) supply high-quality Cimetidine 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

Cimetidine
Cimetidine
  • CAT. No.C260000
  • CAS. No.51481-61-9
  • Mol. F.C10H16N6S
  • Mol. W.252.34 g/mol
  • Stock Status:Under Synthesis
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Cimetidine EP Impurity E
Cimetidine EP Impurity E
  • CAT. No.C260001
  • CAS. No.54237-72-8
  • Mol. F.C10H16N6OS
  • Mol. W.268.34 g/mol
  • Stock Status:Instock
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Cimetidine EP impurity H
Cimetidine EP impurity H
  • CAT. No.C260002
  • CAS. No.74886-59-2
  • Mol. F.C10H18N8S2
  • Mol. W.314.44 g/mol
  • Stock Status:Instock
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Cimetidine EP Impurity J Dihydrochloride
Cimetidine EP Impurity J Dihydrochloride
  • CAT. No.C260003
  • CAS. No.38603-72-4
  • Mol. F.C7H13N3S.2HCl
  • Mol. W.244.19 g/mol
  • Stock Status:Instock
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Cimetidine EP Impurity A
Cimetidine EP Impurity A
  • CAT. No.C260004
  • CAS. No.52378-40-2
  • Mol. F.C10H15N5S2
  • Mol. W.269.39 g/mol
  • Stock Status:Instock
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Cimetidine Impurity 3
Cimetidine Impurity 3
  • CAT. No.C260006
  • CAS. No.38585-62-5
  • Mol. F.C5H8N2O.HCl
  • Mol. W.148.59 g/mol
  • Stock Status:Instock
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Cimetidine EP Impurity D Dihydrochloride
Cimetidine EP Impurity D Dihydrochloride
  • CAT. No.C260008
  • CAS. No.59660-24-1 (HCl)
  • Mol. F.CH17NS.2HCl
  • Mol. W.300.25 g/mol
  • Stock Status:Instock
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Cimetidine EP Impurity C Dihydrochloride
Cimetidine EP Impurity C Dihydrochloride
  • CAT. No.C260009
  • CAS. No.52568-80-6
  • Mol. F.C10H18N6OS.2HCl
  • Mol. W.343.28 g/mol
  • Stock Status:Custom Synthesis
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1,1-Dimethyl-3-cyanoguanidine
1,1-Dimethyl-3-cyanoguanidine
  • CAT. No.C260010
  • CAS. No.1609-06-09
  • Mol. F.C4H8N4
  • Mol. W.112.13 g/mol
  • Stock Status:Custom Synthesis
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Cimetidine EP Impurity I
Cimetidine EP Impurity I
  • CAT. No.C260011
  • CAS. No.29636-87-1
  • Mol. F.C5H8N2O
  • Mol. W.112.13 g/mol
  • Stock Status:Instock
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Cimetidine EP Impurity B
Cimetidine EP Impurity B
  • CAT. No.C260012
  • CAS. No.138035-55-9
  • Mol. F.C10H15N5OS
  • Mol. W.253.32 g/mol
  • Stock Status:Under Synthesis
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Cimetidine EP Impurity F
Cimetidine EP Impurity F
  • CAT. No.C260013
  • CAS. No.55272-86-1
  • Mol. F.C16H24N8S2
  • Mol. W.392.55 g/mol
  • Stock Status:Custom Synthesis
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Cimetidine Impurity 1
Cimetidine Impurity 1
  • CAT. No.C260014
  • CAS. No.182685-55-8
  • Mol. F.C16H26N10S2
  • Mol. W.422.57 g/mol
  • Stock Status:Custom Synthesis
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Cimetidine Impurity 2
Cimetidine Impurity 2
  • CAT. No.C260015
  • CAS. No.NA
  • Mol. F.C15H22N8S
  • Mol. W.346.45 g/mol
  • Stock Status:Custom Synthesis
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N-Nitroso Cimetidine
N-Nitroso Cimetidine
  • CAT. No.C260016
  • CAS. No.73785-40-7
  • Mol. F.C10H15N7OS
  • Mol. W.281.34 g/mol
  • Stock Status:Custom Synthesis
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Cimetidine EP Impurity C
Cimetidine EP Impurity C
  • CAT. No.C260018
  • CAS. No.77076-18-7
  • Mol. F.C10H18N6OS
  • Mol. W.270.35 g/mol
  • Stock Status:Instock
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Cimetidine EP Impurity G
Cimetidine EP Impurity G
  • CAT. No.C260019
  • CAS. No.31857-31-5
  • Mol. F.C4H8N4
  • Mol. W.112.13 g/mol
  • Stock Status:Instock
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(5-Ethyl-1H-imidazol-4-yl)methanol hydrochloride
(5-Ethyl-1H-imidazol-4-yl)methanol hydrochloride
  • CAT. No.C260020
  • CAS. No.38603-74-6
  • Mol. F.C6H10N2O.HCl
  • Mol. W.162.62 g/mol
  • Stock Status:Custom Synthesis
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Cimetidine EP Impurity J Dihydrobromide
Cimetidine EP Impurity J Dihydrobromide
  • CAT. No.C260021
  • CAS. No.NA
  • Mol. F.C7H15Br2N3S
  • Mol. W.333.09 g/mol
  • Stock Status:Custom Synthesis
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Cimetidine EP Impurity A Hydrochloride
Cimetidine EP Impurity A Hydrochloride
  • CAT. No.C260022
  • CAS. No.52378-40-2(Free Base)
  • Mol. F.C10H16ClN5S2
  • Mol. W.305.85 g/mol
  • Stock Status:Custom Synthesis
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Cimetidine EP Impurity J
Cimetidine EP Impurity J
  • CAT. No.C260023
  • CAS. No.38585-67-0
  • Mol. F.C17H13N3S
  • Mol. W.171.26 g/mol
  • Stock Status:Custom Synthesis
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Cimetidine Nitroso Impurity 4
Cimetidine Nitroso Impurity 4
  • CAT. No.C260024
  • CAS. No.NA
  • Mol. F.C10H15N7OS
  • Mol. W.281.30 g/mol
  • Stock Status:Custom Synthesis
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Cimetidine EP Impurity B Hydrochloride Salt
Cimetidine EP Impurity B Hydrochloride Salt
  • CAT. No.C260025
  • CAS. No.NA
  • Mol. F.C10H16ClN5OS
  • Mol. W.289.78 g/mol
  • Stock Status:Custom Synthesis
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Guanidine,N-cyano-N``-methyl-N`-[2-[[(4-methyl-1H-imidazol-5-yl)methyl]thio]ethyl]-,dihydrochloride
Guanidine,N-cyano-N``-methyl-N`-[2-[[(4-methyl-1H-imidazol-5-yl)methyl]thio]ethyl]-,dihydrochloride
  • CAT. No.C260026
  • CAS. No.73785-35-0
  • Mol. F.C10H16N6S.2HCl
  • Mol. W.325.26 g/mol
  • Stock Status:Custom Synthesis
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Cimetidine Impurity 3
Cimetidine Impurity 3
  • CAT. No.C260029
  • CAS. No.NA
  • Mol. F.C5H8N2O.HCl
  • Mol. W.148.59 g/mol
  • Stock Status:Custom Synthesis
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Isotope Labelled Compounds

Cimetidine-D3
Cimetidine-D3
  • CAT. No.C260017
  • CAS. No.1185237-29-9
  • Mol. F.C10H13D3N6S
  • Mol. W.255.36 g/mol
  • Stock Status:Under Synthesis
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