
Purines and Pyrimidine Derivatives
Purines have a bicyclic structure, consisting of a six-membered ring fused to a five-membered ring, both containing nitrogen atoms in key positions. Purine derivatives, such as adenine and guanine, are essential for the formation of DNA and RNA. These compounds have therapeutic applications in cancer and viral disease treatments by inhibiting cell replication. Pyrimidines, on the other hand, have a monocyclic six-membered structure with two nitrogen atoms. Their derivatives, such as cytosine, thymine, and uracil, are also essential components of DNA and RNA and are used in chemotherapy and antiviral treatments.
At CymitQuimica, we offer purine and pyrimidine derivatives for research in molecular biology, genomics, and the development of innovative therapies.
Found 8888 products of "Purines and Pyrimidine Derivatives"
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Fampridine (Dalfampridine, 4-Aminopyridine)
CAS:Formula:C5H6N2Color and Shape:White To Off-White SolidMolecular weight:94.12Iopamidol EP Impurity G
CAS:Formula:C17H22I3N3O8Color and Shape:White To Off-White SolidMolecular weight:777.092,4-Diamine-5,6-Dichloropyrimidine
CAS:Formula:C4H4Cl2N4Color and Shape:White To Off-White SolidMolecular weight:179.00Febuxostat USP Related Compound E
CAS:Formula:C15H14N2O3SColor and Shape:White To Off-White SolidMolecular weight:302.35Methylguanidine HCl
CAS:Formula:C2H7N3·HClColor and Shape:White To Off-White SolidMolecular weight:73.10 36.46Eletriptan HBr
CAS:Formula:C22H26N2O2S·HBrColor and Shape:Pale Yellow SolidMolecular weight:382.52 80.91Zolmitriptan EP Impurity G (Zolmitriptan USP Related Compound A, N-Desmethyl Zolmitriptan)
CAS:Formula:C15H19N3O2Color and Shape:Yellow SolidMolecular weight:273.34Frovatriptan impurity 9 HCl
Formula:C14H16N2O2·HClColor and Shape:White To Off-White SolidMolecular weight:244.29 36.46Zolmitriptan EP Impurity I
CAS:Formula:C17H21N3O4Color and Shape:White To Off-White SolidMolecular weight:331.37Clopidogrel Impurity 44 (Mixture of Diastereomers)
Formula:C25H26ClNO6SColor and Shape:Pink SolidMolecular weight:503.99Caffeine Impurity 1 Ammonium Salt
CAS:Formula:C8H11N4O3·NH4Color and Shape:White To Off-White SolidMolecular weight:211.20 18.04Sumatriptan-d6 Hemisuccinate
CAS:Formula:C14H15D6N3O2S·5C4H6O4Color and Shape:White To Off-White SolidMolecular weight:301.44 0.5*118.09mono-Benzyl Miglustat Isomer 1
Formula:C17H27NO4Color and Shape:White To Off-White SolidMolecular weight:309.41Thiamine EP Impurity F Bromide HBr
CAS:Formula:C13H19N4OS·Br·HBrColor and Shape:White To Off-White SolidMolecular weight:279.39 79.90 80.91Pyridoxine Impurity 5
CAS:Formula:C12H15NO6Color and Shape:White To Off-White SolidMolecular weight:269.25Theophylline 7-Acetic Acid
CAS:Formula:C9H10N4O4Color and Shape:White To Off-White SolidMolecular weight:238.20Pyridoxine Impurity 12 HCl
CAS:Formula:C8H9NO3·HClColor and Shape:Off-White SolidMolecular weight:167.17 36.46Febuxostat Impurity 58
CAS:Formula:C17H18N2O3SColor and Shape:White To Off-White SolidMolecular weight:330.40Tetrabenazine Impurity 60 (2R,3R,11bR)
CAS:Formula:C19H29NO3Color and Shape:Off-White SolidMolecular weight:319.45Rizatriptan Trimethylammonium Chloride
CAS:Formula:C16H22N5·ClColor and Shape:White To Off-White SolidMolecular weight:284.39 35.45Mono-POC Tenofovir Fumarate (Mixture of Diastereomers)
CAS:Formula:C17H26N5O10P·C4H4O4Color and Shape:White To Off-White SolidMolecular weight:491.39 116.07Fampridine Impurity 5 (3-Cyanopyridine)
CAS:Formula:C6H4N2Color and Shape:White To Off-White SolidMolecular weight:104.11Clopidogrel Impurity 43 Bromide (Clopidogrel Iminium Impurity)
CAS:Formula:C16H15ClNO2S·BrMolecular weight:320.81 79.90Eletriptan Impurity 2
CAS:Formula:C30H34N2O4S2Color and Shape:Pale Yellow SolidMolecular weight:550.73Theophylline EP Impurity F (Theophylline-Ethylenediamine EP Impurity F, Diprophylline EP Impurity C, Etofylline)
CAS:Formula:C9H12N4O3Color and Shape:White To Off-White SolidMolecular weight:224.22Ondansetron Impurity 1
CAS:Formula:C12H11NOColor and Shape:White To Off-White SolidMolecular weight:185.23Prucalopride Impurity 26
Formula:C18H26BrN3O3Color and Shape:White To Off-White SolidMolecular weight:412.33Doxofylline Impurity 11
CAS:Formula:C15H16N8O4Color and Shape:White To Off-White SolidMolecular weight:372.35Methotrexate Impurity 1 HCl
CAS:Formula:C22H27N9O4·HClColor and Shape:Yellow SolidMolecular weight:481.52 36.46Diisopropyl Tenofovir Fumarate
CAS:Formula:C15H26N5O4P·C4H4O4Color and Shape:White To Off-White SolidMolecular weight:371.38 116.07Tenofovir Impurity 68
CAS:Formula:C18H26N10O7P2Color and Shape:White To Off-White SolidMolecular weight:556.42Clopidogrel Impurity 57
Formula:C16H16ClNO5S2Color and Shape:White To Off-White SolidMolecular weight:401.88Liothyronine EP Impurity B
CAS:Formula:C9H9I2NO3Color and Shape:Off-White SolidMolecular weight:432.98Febuxostat USP Related Compound D
CAS:Formula:C16H16N2O3SColor and Shape:Pale Grey SolidMolecular weight:316.38Metabolism Compound Library
<p>A unique collection of xnum metabolic pathway-related bioactive small molecule compounds for high-throughput, high-content screening.</p>Color and Shape:LiquidTenofovir Impurity 132
CAS:Formula:C14H22N5O7PColor and Shape:White To Off-White SolidMolecular weight:403.33Thiamine Impurity 11
CAS:Formula:C6H8N4OColor and Shape:White To Off-White SolidMolecular weight:152.16N-Nitroso Methotrexate EP Impurity L Enantiomer (N-Methyl-N-Nitrosoaniline)
Formula:C13H15N3O6Molecular weight:309.28Pemetrexed EP Impurity B and Pemetrexed EP Impurity C
CAS:Formula:C40H40N10O13Molecular weight:868.82Sumatriptan EP Impurity D (Sumatriptan N-Oxide)
CAS:Formula:C14H21N3O3SColor and Shape:White To Off-White SolidMolecular weight:311.40Temozolomide Impurity 11
CAS:Formula:C8H10N2OColor and Shape:White To Off-White SolidMolecular weight:150.18Thyroxamine HCl
CAS:Formula:C14H11I4NO2·HClColor and Shape:White To Off-White SolidMolecular weight:732.86 36.46Tenofovir Disoproxil Fumarate
CAS:Formula:C19H30N5O10P·C4H4O4Color and Shape:White To Off-White SolidMolecular weight:519.45 116.07Clopidogrel EP Impurity D Sulfate
CAS:Formula:C24H21Cl2NO4S·H2SO4Color and Shape:White To Off-White SolidMolecular weight:490.40 98.07Tegaserod Maleate
CAS:Formula:C16H23N5O·C4H4O4Color and Shape:White To Off-White SolidMolecular weight:301.39 116.07Thiamine EP Impurity G Chloride HCl
CAS:Formula:C14H19N4O2S·Cl·HClColor and Shape:White To Off-White SolidMolecular weight:307.39 35.45 36.46Oseltamivir EP Impurity F (Mixture of Diastereomers)
CAS:Formula:C15H26N2O4Color and Shape:White To Off-White SolidMolecular weight:298.38Prucalopride-13C-d3
CAS:Formula:C1713CH23D3ClN3O3Color and Shape:White To Off-White SolidMolecular weight:371.88Frovatriptan Impurity 9
Formula:C14H16N2O2Color and Shape:Off-White To Pale Yellow SolidMolecular weight:244.30Tegaserod Metabolite (SDZ 244-120)
CAS:Formula:C16H17NO9Color and Shape:White To Off-White SolidMolecular weight:367.31Ondansetron EP Impurity A (Ondansetron USP Related Compound A (Free Form))
CAS:Formula:C16H20N2OColor and Shape:White To Off-White SolidMolecular weight:256.35Febuxostat tert-butoxy Acid
Formula:C16H16N2O3SColor and Shape:White To Off-White SolidMolecular weight:316.38Zolmitriptan Impurity 22
CAS:Formula:C14H14N2O4Color and Shape:White To Off-White SolidMolecular weight:274.28Lifitegrast Impurity 7
Formula:C19H17NO6SColor and Shape:White To Off-White SolidMolecular weight:387.41Fampridine N-Oxide HCl
CAS:Formula:C5H6N2O·HClColor and Shape:White To Off-White SolidMolecular weight:110.12 36.46Pyridoxine Impurity 4
Formula:C12H15NO6Color and Shape:White To Off-White SolidMolecular weight:269.25Memantine-d3 HCl
CAS:Formula:C12H18D3N·HClColor and Shape:White To Off-White SolidMolecular weight:182.33 36.46Sumatriptan Impurity 10 Succinate
CAS:Formula:C13H18N2O·C4H6O4Color and Shape:Off-White SolidMolecular weight:218.30 118.09Pemetrexed EP Impurity E Disodium Salt (Pemetrexed Enantiomer Disodium Salt)
CAS:Formula:C20H19N5O6·2NaColor and Shape:Off-White SolidMolecular weight:425.40 2*22.996-Hydroxy Ondansetron HCl
CAS:Formula:C18H19N3O2·HClColor and Shape:Off-White SolidMolecular weight:309.37 36.46Zolmitriptan Impurity 1 HCl
CAS:Formula:C10H13N3O2·HClColor and Shape:Brown SolidMolecular weight:207.23 36.46Febuxostat Impurity 14
CAS:Formula:C15H16N2OSColor and Shape:White To Off-White SolidMolecular weight:272.37Tenofovir Impurity 86
Formula:C15H17N5O3SColor and Shape:White To Off-White SolidMolecular weight:347.39Clopidogrel Impurity 2 Bromide (rac-Clopidogrel Iminium Impurity)
CAS:Formula:C16H15ClNO2S·BrColor and Shape:Pale Yellow SolidMolecular weight:320.81 79.90Tetrabenazine Impurity 41 (2R, 3R, 11bS)
CAS:Formula:C19H29NO3Color and Shape:Yellow SolidMolecular weight:319.45Prucalopride Impurity 37
Formula:C10H11BrClNO3Color and Shape:White To Off-White SolidMolecular weight:308.56Methotrexate EP Impurity L
CAS:Formula:C13H16N2O5Color and Shape:White To Off-White SolidMolecular weight:280.28Tenofovir Impurity 29
CAS:Formula:C21H22N5O4PColor and Shape:Pale Yellow SolidMolecular weight:439.41Sumatriptan EP Impurity C
CAS:Formula:C15H23N3O3SColor and Shape:White To Off-White SolidMolecular weight:325.43Rizatriptan EP Impurity A
CAS:Formula:C28H35N7Color and Shape:White To Off-White SolidMolecular weight:469.64Fampridine Impurity 3
CAS:Formula:C9H12N2O2Color and Shape:White To Off-White SolidMolecular weight:180.21Phenylhydrazine HCl
CAS:Formula:C6H8N2·HClColor and Shape:White To Off-White SolidMolecular weight:108.14 36.46Prucalopride Impurity 1
CAS:Formula:C18H24ClN3O3Color and Shape:Off-White SolidMolecular weight:365.86Pyridoxine Impurity 1
Formula:C16H20N2O5Color and Shape:White To Off-White SolidMolecular weight:320.35Tenofovir Disoproxil USP Related Compound A ((S)-Tenofovir Disoproxil Fumarate)
CAS:Formula:C19H30N5O10P·C4H4O4Color and Shape:White To Off-White SolidMolecular weight:519.45 116.07Theophylline Impurity 19 (Mixture of Z and E Isomers)
CAS:Formula:C8H12O4Color and Shape:Colorless LiquidMolecular weight:172.18Thiamine EP Impurity A Sulfate
CAS:Formula:C12H16N4O4S2·H2SO4Color and Shape:Off-White SolidMolecular weight:344.40 98.076-Mercaptopurine-13C-15N2 (Azathioprine EP Impurity B-13C-15N2)
CAS:Formula:C413CH4N215N2SMolecular weight:155.15Febuxostat Impurity 5
CAS:Formula:C14H12N2O3SColor and Shape:Off-White To Pale Yellow SolidMolecular weight:288.32Ondansetron-13C-d3
CAS:Formula:C1713CH16D3N3OColor and Shape:White To Off-White SolidMolecular weight:297.38Ondansetron EP Impurity F
CAS:Formula:C4H6N2Color and Shape:White To Off-White SolidMolecular weight:82.118-Hydroxy Ondansetron
CAS:Formula:C18H19N3O2Color and Shape:White To Off-White SolidMolecular weight:309.37Pyridoxine EP Impurity B HCl
CAS:Formula:C8H11NO2·HClColor and Shape:White To Off-White SolidMolecular weight:153.18 36.46Clopidogrel EP Impurity E (R-Isomer)
CAS:Formula:C15H15ClN2OSColor and Shape:White To Off-White SolidMolecular weight:306.81Clopidogrel EP Impurity B HCl (Clopidogrel USP Related Compound B (S-Isomer))
CAS:Formula:C16H16ClNO2S·HClColor and Shape:White To Off-White SolidMolecular weight:321.82 36.46Theophylline-d6 (Dimenhydrinate EP Impurity A-d6, Diprophylline EP Impurity B-d6)
CAS:Formula:C7H2D6N4O2Color and Shape:White To Off-White SolidMolecular weight:186.20Theophylline-Ethylenediamine EP Impurity G-d6 (Caffeine EP Impurity D-d6, Theobromine-d6)
CAS:Formula:C7H2D6N4O2Molecular weight:186.20Methotrexate EP Impurity I Sodium Salt (Methotrexate-1-Monomethyl Ester Sodium Salt)
CAS:Formula:C21H23N8O5·NaMolecular weight:467.47 22.99Naratriptan Impurity 12 Iodide
CAS:Formula:C20H27N4O4S2·IColor and Shape:Pale Yellow SolidMolecular weight:451.58 126.91Methotrexate EP Impurity K (Folinic Acid EP Impurity A)
CAS:Formula:C12H14N2O5Color and Shape:Light Brown SolidMolecular weight:266.25Mono-POC Methyl Tenofovir Fumarate (Mixture of Diastereomers)
CAS:Formula:C15H24N5O7P·C4H4O4Color and Shape:White To Off-White SolidMolecular weight:417.36 116.07Sapropterin Impurity 1 Trifluoroacetate (Mixture of Isomers)
Formula:C9H14N4O4·C2HF3O2Molecular weight:242.24 114.02Febuxostat Impurity 34
CAS:Formula:C15H17NO3SColor and Shape:White To Off-White SolidMolecular weight:291.37Memantine Lactose Adduct
CAS:Formula:C24H41NO10Color and Shape:Pale Brown SolidMolecular weight:503.59Pyridoxine Impurity 7
Formula:C16H20N2O5Color and Shape:White To Off-White SolidMolecular weight:320.35rac-Tenofovir-d7
CAS:Formula:C9H7D7N5O4PColor and Shape:White To Off-White SolidMolecular weight:294.26trans-Dihydro Tetrabenazine
CAS:Formula:C19H29NO3Color and Shape:White To Off-White SolidMolecular weight:319.458-Benzyl Theophylline
CAS:Formula:C14H14N4O2Color and Shape:White To Off-White SolidMolecular weight:270.29Tenofovir Impurity 30
CAS:Formula:C15H18N5O4PColor and Shape:White To Off-White SolidMolecular weight:363.31Caffeine-13C3 (Pentoxifylline EP Impurity F-13C3, Theophylline EP Impurity A-13C3, Theophylline-Ethylenediamine EP Impurity A-13C3)
CAS:Formula:C513C3H10N4O2Color and Shape:White To Off-White SolidMolecular weight:197.16Prucalopride Impurity 29
Formula:C17H24ClN3O2Color and Shape:White To Off-White SolidMolecular weight:337.853-Desmethyl Istradefylline
CAS:Formula:C19H22N4O4Color and Shape:Pale Yellow SolidMolecular weight:370.41Allopurinol EP Impurity D (Allopurinol USP Related Compound D)
CAS:Formula:C6H9N3O2Color and Shape:Pale Brown SolidMolecular weight:155.161-Methylnicotinamide Iodide
CAS:Formula:C7H9N2O·IColor and Shape:Pale Yellow SolidMolecular weight:137.16 126.91Caffeine Impurity 3
CAS:Formula:C7H10N4O3Color and Shape:White To Off-White SolidMolecular weight:198.18Tenofovir Related Compound 10
CAS:Formula:C8H11N5OColor and Shape:Off-White SolidMolecular weight:193.21Rizatriptan EP Impurity I Benzoate (N-Monodesmethyl Rizatriptan Benzoate)
CAS:Formula:C14H17N5·C7H6O2Color and Shape:White To Off-White SolidMolecular weight:255.33 122.12Tenofovir Impurity 37
CAS:Formula:C10H15O6PSColor and Shape:Pale Yellow LiquidMolecular weight:294.26(S)-Clopidogrel N-Oxide
CAS:Formula:C16H16ClNO3SColor and Shape:Pale Yellow Semi-SolidMolecular weight:337.82Istradefylline Dimer Impurity 1 (Mixture of Diastereomers)
Formula:C40H50N8O8Color and Shape:White To Off-White SolidMolecular weight:770.89Tenofovir Impurity 31 (Mixture of Isomers)
Formula:C16H20N5O4PColor and Shape:Colorless LiquidMolecular weight:2 377.34Tetrabenazine Impurity 42 (2S, 3S, 11bR)
CAS:Formula:C19H29NO3Color and Shape:Off-White SolidMolecular weight:319.45Almotriptan EP Impurity A Malate (Almotriptan USP Related Compound C Malate)
CAS:Formula:C16H23N3O2S·C4H6O5Color and Shape:Off-White SolidMolecular weight:321.44 134.09Nicotinic Acid EP Impurity F (5-Nitronicotinic Acid)
CAS:Formula:C6H4N2O4Color and Shape:Yellow SolidMolecular weight:168.11Prucalopride Impurity 25
CAS:Formula:C14H18ClN3O2Color and Shape:White To Off-White SolidMolecular weight:295.77Thiamine Triphosphate Trioctylamine
CAS:Formula:C12H19N4O10P3S·3C8H19NMolecular weight:504.28 3*129.25rac-Liothyronine-15N-13C9
CAS:Formula:C613C9H12I315NO4Color and Shape:White To Off-White SolidMolecular weight:660.90Pemetrexed EP Impurity D Monosodium Salt
CAS:Formula:C25H27N6O9·NaColor and Shape:Blue SolidMolecular weight:555.52 22.99Fampridine-d4 (Dalfampridine-d4, 4-Aminopyridine-d4)
CAS:Formula:C5H2D4N2Color and Shape:Off-White SolidMolecular weight:98.14Istradefylline Dimer Impurity 2
CAS:Formula:C40H48N8O8Color and Shape:White To Off-White SolidMolecular weight:768.87Memantine EP Impurity B HCl (Memantine USP Related Compound H)
CAS:Formula:C13H23N·HClColor and Shape:White To Off-White SolidMolecular weight:193.33 36.46Tetrabenazine Impurity 37
CAS:Formula:C19H27NO3Color and Shape:White To Off-White SolidMolecular weight:317.43Febuxostat Impurity 32 HCl
CAS:Formula:C12H11NO3S·HClColor and Shape:Yellow SolidMolecular weight:249.29 36.46Caffeine EP Impurity C (Caffeine USP Related Compound C, Isocaffeine)
CAS:Formula:C8H10N4O2Color and Shape:White To Off-White SolidMolecular weight:194.19Topiroxostat Impurity 2
Formula:C7H8N4O2Color and Shape:White To Off-White SolidMolecular weight:180.17Almotriptan Impurity 6 DiHCl (Almotriptan N-Dimer Impurity DiHCl)
Formula:C30H41N5O2S·2HClColor and Shape:White To Off-White SolidMolecular weight:535.76 2 36.46Oseltamivir EP Impurity E HCl
CAS:Formula:C15H26N2O4·HClColor and Shape:Off-White SolidMolecular weight:298.39 36.46Choline Orotate
CAS:Formula:C5H3N2O4·C5H14NOColor and Shape:Off-White SolidMolecular weight:104.17 155.09Desmethyl Prucalopride
CAS:Formula:C17H24ClN3O3Color and Shape:White To Off-White SolidMolecular weight:353.85

