
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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1-Methylnicotinamide-13C-d3 Iodide
CAS:Formula:C613CH6D3N2O·IColor and Shape:Pale Yellow SolidMolecular weight:141.17 126.91Zolmitriptan Impurity 5
Formula:C17H23N3O3Color and Shape:White To Off-White SolidMolecular weight:317.39Almotriptan Hydrazine Precursor HCl
CAS:Formula:C11H17N3O2S·HClColor and Shape:Off-White SolidMolecular weight:255.34 36.46rac-Eletriptan-d3 HBr
CAS:Formula:C22H23D3N2O2S·HBrColor and Shape:Pale Brown SolidMolecular weight:385.54 80.91Nicotinic Acid EP Impurity D (Isocinchomeronic Acid)
CAS:Formula:C7H5NO4Color and Shape:Pale Yellow SolidMolecular weight:167.12Oseltamivir HCl
CAS:Formula:C16H28N2O4·HClColor and Shape:White To Off-White SolidMolecular weight:312.41 36.46Oxypurinol-13C3-15N3
CAS:Formula:C213C3H4N15N3O2Color and Shape:Off-White SolidMolecular weight:158.07Phenylalanyl-Tryptophane-d5 (Mixture of Diastereomers)
Formula:C20H16D5N3O3Color and Shape:Pale Yellow SolidMolecular weight:356.44N-Nitroso Methotrexate EP Impurity L (N-Methyl-N-Nitrosoaniline)
Formula:C13H15N3O6Molecular weight:309.28Lifitegrast Impurity 16
Formula:C19H17NO6SColor and Shape:White To Off-White SolidMolecular weight:387.41rac-Iopamidol EP Impurity J
CAS:Formula:C16H20I3N3O7Color and Shape:White To Off-White SolidMolecular weight:747.06Prucalopride Impurity 37
Formula:C10H11BrClNO3Color and Shape:White To Off-White SolidMolecular weight:308.56Doxofylline-d4
CAS:Formula:C11H10D4N4O4Color and Shape:White To Off-White SolidMolecular weight:270.28Caffeine Impurity 3
CAS:Formula:C7H10N4O3Color and Shape:White To Off-White SolidMolecular weight:198.18Methotrexate EP Impurity L
CAS:Formula:C13H16N2O5Color and Shape:White To Off-White SolidMolecular weight:280.28Naratriptan
CAS:Formula:C17H25N3O2SColor and Shape:Off-White To Pale Yellow SolidMolecular weight:335.47Tenofovir Impurity 31 (Mixture of Isomers)
Formula:C16H20N5O4PColor and Shape:Colorless LiquidMolecular weight:2 377.34trans-Dihydro Tetrabenazine
CAS:Formula:C19H29NO3Color and Shape:White To Off-White SolidMolecular weight:319.45Tenofovir Impurity 30
CAS:Formula:C15H18N5O4PColor and Shape:White To Off-White SolidMolecular weight:363.31Fampridine Impurity 3
CAS:Formula:C9H12N2O2Color and Shape:White To Off-White SolidMolecular weight:180.21Desmethyl Prucalopride
CAS:Formula:C17H24ClN3O3Color and Shape:White To Off-White SolidMolecular weight:353.85Prucalopride Impurity 38
CAS:Formula:C10H9BrClNO4Color and Shape:White To Off-White SolidMolecular weight:322.54Thiamine EP Impurity A Sulfate
CAS:Formula:C12H16N4O4S2·H2SO4Color and Shape:Off-White SolidMolecular weight:344.40 98.07Ondansetron-13C-d3
CAS:Formula:C1713CH16D3N3OColor and Shape:White To Off-White SolidMolecular weight:297.38Febuxostat Impurity 34
CAS:Formula:C15H17NO3SColor and Shape:White To Off-White SolidMolecular weight:291.37Methotrexate EP Impurity K (Folinic Acid EP Impurity A)
CAS:Formula:C12H14N2O5Color and Shape:Light Brown SolidMolecular weight:266.25Theophylline Impurity 19 (Mixture of Z and E Isomers)
CAS:Formula:C8H12O4Color and Shape:Colorless LiquidMolecular weight:172.18Caffeine-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:197.168-Hydroxy Ondansetron
CAS:Formula:C18H19N3O2Color and Shape:White To Off-White SolidMolecular weight:309.37Clopidogrel EP Impurity E (R-Isomer)
CAS:Formula:C15H15ClN2OSColor and Shape:White To Off-White SolidMolecular weight:306.81Palonosetron USP Related Compound A (Palonosetron N-Oxide)
CAS:Formula:C19H24N2O2Color and Shape:White To Off-White SolidMolecular weight:312.41Thiamine-d4 Chloride HCl
CAS:Formula:C12H13D4N4OS·Cl·HClColor and Shape:White To Off-White SolidMolecular weight:269.38 35.45 36.46Almotriptan EP Impurity C (Almotriptan USP Related Compound A, N-Hydroxymethyl Almotriptan)
CAS:Formula:C18H27N3O3SColor and Shape:White To Off-White SolidMolecular weight:365.50Lifitegrast Impurity 14
CAS:Formula:C31H28Cl2N2O7SColor and Shape:White To Off-White SolidMolecular weight:643.53α-Hydroxy Tetrabenazine-d7 (trans-Dihydro Tetrabenazine-d7)
CAS:Formula:C19H22D7NO3Color and Shape:White To Off-White SolidMolecular weight:326.49Prucalopride Impurity 36
CAS:Formula:C10H10ClNO4Color and Shape:White To Off-White SolidMolecular weight:243.64Caffeine EP Impurity F (Caffeine USP Related Compound F, Paraxanthine)
CAS:Formula:C7H8N4O2Color and Shape:Off-White SolidMolecular weight:180.17Febuxostat Impurity 24
CAS:Formula:C18H21NO5SColor and Shape:White To Off-White SolidMolecular weight:363.43Clopidogrel Impurity 32 HCl
CAS:Formula:C16H18ClNO2S·HClColor and Shape:White To Off-White SolidMolecular weight:323.84 36.46Zolmitriptan EP Impurity C (Zolmitriptan USP Related Compound F)
CAS:Formula:C38H53N7O4Color and Shape:Yellow SolidMolecular weight:671.89Pemetrexed EP Impurity D Monosodium Salt
CAS:Formula:C25H27N6O9·NaColor and Shape:Blue SolidMolecular weight:555.52 22.99Zolmitriptan Impurity 8 (Mixture of Diastereomers)
Formula:C16H21N3O4Color and Shape:Pale Brown SolidMolecular weight:319.36Memantine-Glycine Adduct HCl
CAS:Formula:C14H23NO2·HClColor and Shape:White To Off-White SolidMolecular weight:237.34 36.46Clopidogrel 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:186.20Topiroxostat Impurity 2
Formula:C7H8N4O2Color and Shape:White To Off-White SolidMolecular weight:180.17Naratriptan Impurity 12 Iodide
CAS:Formula:C20H27N4O4S2·IColor and Shape:Pale Yellow SolidMolecular weight:451.58 126.91Choline Orotate
CAS:Formula:C5H3N2O4·C5H14NOColor and Shape:Off-White SolidMolecular weight:104.17 155.09Ondansetron EP Impurity F
CAS:Formula:C4H6N2Color and Shape:White To Off-White SolidMolecular weight:82.11Almotriptan EP Impurity F Malate
CAS:Formula:C19H29N3O2S·C4H6O5Color and Shape:Off-White SolidMolecular weight:363.53 134.09Thiamine Phosphate Chloride
CAS:Formula:C12H18N4O4PS·ClColor and Shape:White To Off-White SolidMolecular weight:345.34 35.45Febuxostat Impurity 5
CAS:Formula:C14H12N2O3SColor and Shape:Off-White To Pale Yellow SolidMolecular weight:288.32Tenofovir Alafenamide-d5 (Mixture of Diastereomers)
CAS:Formula:C21H24D5N6O5PColor and Shape:Yellow SolidMolecular weight:481.50Sapropterin Impurity 1 Trifluoroacetate (Mixture of Isomers)
Formula:C9H14N4O4·C2HF3O2Molecular weight:242.24 114.02Pyridoxine Impurity 7
Formula:C16H20N2O5Color and Shape:White To Off-White SolidMolecular weight:320.35Febuxostat Impurity (2,2'-(4-isobutoxy-1,3-phenylene)bis(4-methylthiazole-5-carboxylic acid))
Formula:C20H20N2O5S2Color and Shape:Pale Yellow SolidMolecular weight:432.52Sumatriptan Succinate
CAS:Formula:C14H21N3O2S·C4H6O4Color and Shape:White To Off-White SolidMolecular weight:295.40 118.09Febuxostat Impurity 25
CAS:Formula:C18H21NO5SColor and Shape:White To Off-White SolidMolecular weight:363.43Pyridoxine Impurity 1
Formula:C16H20N2O5Color and Shape:White To Off-White SolidMolecular weight:320.35Prucalopride Impurity 1
CAS:Formula:C18H24ClN3O3Color and Shape:Off-White SolidMolecular weight:365.86Tenofovir Disoproxil USP Related Compound A ((S)-Tenofovir Disoproxil Fumarate)
CAS:Formula:C19H30N5O10P·C4H4O4Color and Shape:White To Off-White SolidMolecular weight:519.45 116.07Febuxostat Acyl Glucuronide
CAS:Formula:C22H24N2O9SColor and Shape:Pale Yellow SolidMolecular weight:492.501-Methylnicotinamide Iodide
CAS:Formula:C7H9N2O·IColor and Shape:Pale Yellow SolidMolecular weight:137.16 126.91Iopamidol EP Impurity E
CAS:Formula:C19H24I3N3O9Color and Shape:White To Off-White SolidMolecular weight:819.13Memantine EP Impurity A HCl (Memantine USP Related Compound G)
CAS:Formula:C11H19N·HClColor and Shape:White To Off-White SolidMolecular weight:165.28 36.46Prucalopride Impurity 39
CAS:Formula:C12H12Br2ClNO4Color and Shape:White To Off-White SolidMolecular weight:429.49Prucalopride Impurity 6
CAS:Formula:C18H27N3O3Color and Shape:White To Off-White SolidMolecular weight:333.43D-Phenylalaninyl-D-Phenylalanine
CAS:Formula:C18H20N2O3Color and Shape:White To Off-White SolidMolecular weight:312.37Pemetrexed EP Impurity D Trisodium Salt
CAS:Formula:C25H25N6O9·3NaColor and Shape:Pale Green SolidMolecular weight:553.51 3*22.99Thiamine EP Impurity C Chloride HCl
CAS:Formula:C12H16ClN4S·Cl·HClColor and Shape:White To Off-White SolidMolecular weight:283.80 35.45 36.46Rizatriptan Impurity 5 DiHCl
CAS:Formula:C9H11N5·2HClColor and Shape:Pale Yellow SolidMolecular weight:189.22 2*36.46Tetrabenazine Impurity 41 (2R, 3R, 11bS)
CAS:Formula:C19H29NO3Color and Shape:Yellow SolidMolecular weight:319.45Memantine USP Related Compound B (1-Hydroxy-3,5-dimethyladamantane)
CAS:Formula:C12H20OColor and Shape:White To Off-White SolidMolecular weight:180.29Istradefylline Dimer Impurity 2
CAS:Formula:C40H48N8O8Color and Shape:White To Off-White SolidMolecular weight:768.87Trifluridine Impurity 6
CAS:Formula:C10H11F3N2O5Color and Shape:White To Off-White SolidMolecular weight:296.20Memantine HCl
CAS:Formula:C12H21N·HClColor and Shape:White To Off-White SolidMolecular weight:179.31 36.464-Desmethyl Istradefylline
CAS:Formula:C19H22N4O4Color and Shape:Pale Yellow SolidMolecular weight:370.41Telbivudine-d4
CAS:Formula:C10H10D4N2O5Color and Shape:White To Off-White SolidMolecular weight:246.26Oseltamivir EP Impurity G
CAS:Formula:C16H28N2O4Color and Shape:White To Off-White SolidMolecular weight:312.41Fampridine (Dalfampridine, 4-Aminopyridine)
CAS:Formula:C5H6N2Color and Shape:White To Off-White SolidMolecular weight:94.12Oseltamivir-Fructose Adduct 1 (Amadori Rearrangement Product)
Formula:C22H38N2O9Color and Shape:White To Off-White SolidMolecular weight:474.55Thiamine Triphosphate Trioctylamine
CAS:Formula:C12H19N4O10P3S·3C8H19NMolecular weight:504.28 3*129.25Palonosetron EP Impurity D HCl (Palonosetron USP Related Compound E)
CAS:Formula:C19H22N2O·HClColor and Shape:White To Off-White SolidMolecular weight:294.40 36.46Tenofovir Impurity 7 HCl
CAS:Formula:C6H13NO2·HClColor and Shape:White To Off-White SolidMolecular weight:131.18 36.46Ondansetron EP Impurity G (Ondansetron USP Related Compound G)
CAS:Formula:C17H17N3OColor and Shape:White To Off-White SolidMolecular weight:279.34Nicotinic Acid EP Impurity E (Isoniazid EP Impurity A)
CAS:Formula:C6H5NO2Color and Shape:White To Off-White SolidMolecular weight:123.11(S)-Frovatriptan-d3 Succinate
CAS:Formula:C14H14N3OD3·C4H6O4Color and Shape:White To Off-White SolidMolecular weight:246.33 118.09Tenofovir Impurity 38
CAS:Formula:C8H11O6PSColor and Shape:White To Off-White SolidMolecular weight:266.20Lifitegrast Impurity 44
Formula:C31H28Cl2N2O7SColor and Shape:Pale Yellow SolidMolecular weight:643.53Methotrexate EP Impurity I Enantiomer ((R)-Methotrexate-1- Monomethyl Ester)
CAS:Formula:C21H24N8O5Molecular weight:468.47Almotriptan Impurity 6 DiHCl (Almotriptan N-Dimer Impurity DiHCl)
Formula:C30H41N5O2S·2HClColor and Shape:White To Off-White SolidMolecular weight:535.76 2 36.46Mono-POC Ethyl Tenofovir Fumarate (Mixture of Diastereomers)
CAS:Formula:C16H26N5O7P·C4H4O4Color and Shape:White To Off-White SolidMolecular weight:431.39 116.07Pyridoxine Impurity 8 DiHCl
Formula:C16H20N2O5·2HClColor and Shape:White To Off-White SolidMolecular weight:320.35 2 36.46Clopidogrel Impurity 1 Chloride
CAS:Formula:C16H13ClNO2S·ClColor and Shape:Off-White SolidMolecular weight:318.79 35.45Lifitegrast Impurity 5
CAS:Formula:C19H13Cl2NO4Color and Shape:Pale Yellow SolidMolecular weight:390.22Iopamidol EP Impurity D
CAS:Formula:C14H15I3N2O7Color and Shape:White To Off-White SolidMolecular weight:703.99Trifluridine Related Compound A
CAS:Formula:C10H12N2O7Color and Shape:Pale Yellow SolidMolecular weight:272.21Ondansetron EP Impurity C (Ondansetron USP Related Compound C)
CAS:Formula:C13H13NOColor and Shape:White To Off-White SolidMolecular weight:199.25Clopidogrel EP Impurity A (R-Isomer) ((R)-Clopidogrel Carboxylic Acid)
CAS:Formula:C15H14ClNO2SColor and Shape:Off-White SolidMolecular weight:307.79Idelalisib Impurity 8
CAS:Formula:C17H16FN3OColor and Shape:White To Off-White SolidMolecular weight:297.33n-POC-POC Tenofovir
CAS:Formula:C19H30N5O10PColor and Shape:Colorless Semi-SolidMolecular weight:519.45β-Nicotinamide Adenine Dinucleotide Sodium Salt
CAS:Formula:C21H26N7O14P2·NaMolecular weight:662.43 22.99Idelalisib Impurity 1
CAS:Formula:C13H11FN2OColor and Shape:White To Off-White SolidMolecular weight:230.242-Oxo-Clopidogrel (Mixture of Diastereomers)
CAS:Formula:C16H16ClNO3SColor and Shape:Pale Brown SolidMolecular weight:337.82Phenylhydrazine HCl
CAS:Formula:C6H8N2·HClColor and Shape:White To Off-White SolidMolecular weight:108.14 36.46Doxofylline Impurity 12
CAS:Formula:C11H16N4O4Color and Shape:White To Off-White SolidMolecular weight:268.27Pyrimidine Impurity 17
CAS:Formula:C27H28ClN7O3SColor and Shape:Off-White SolidMolecular weight:566.08Ondansetron EP Impurity H
CAS:Formula:C17H17N3OColor and Shape:White To Off-White SolidMolecular weight:279.34Memantine Glucuronic Acid Conjugate (Furanose Form)
Formula:C18H29NO6Color and Shape:Off-White SolidMolecular weight:355.43Zolmitriptan Impurity 16 HCl
Formula:C10H12N2O2·HClColor and Shape:Pale Yellow SolidMolecular weight:192.22 36.46Clopidogrel Metabolite II (Mixture of Diastereomers)
CAS:Formula:C25H26ClNO6SColor and Shape:White To Off-White SolidMolecular weight:503.99Frovatriptan Succinate
CAS:Formula:C14H17N3O·C4H6O4Color and Shape:White To Off-White SolidMolecular weight:243.31 118.09Oseltamivir EP Impurity D
CAS:Formula:C11H13NO4Color and Shape:Off-White SolidMolecular weight:223.23Febuxostat Impurity 33
CAS:Formula:C17H21NO3SColor and Shape:White To Off-White SolidMolecular weight:319.42Iopamidol EP Impurity G
CAS:Formula:C17H22I3N3O8Color and Shape:White To Off-White SolidMolecular weight:777.09tri-Benzyl Miglustat Isomer 1 HCl
Formula:C31H39NO4·HClColor and Shape:Off-White SolidMolecular weight:489.66 36.46Clopidogrel EP Impurity F HCl
CAS:Formula:C15H16ClNO2S·HClColor and Shape:White To Off-White SolidMolecular weight:309.81 36.46(S)-Frovatriptan Succinate
Formula:C14H17N3O·C4H6O4Color and Shape:White To Off-White SolidMolecular weight:243.31 118.09N,N'-Dinitroso Caffeine EP Impurity E (N,N'-Dinitroso Caffeidine)
CAS:Formula:C7H10N6O3Molecular weight:226.20Theophylline EP Impurity E
CAS:Formula:C7H8N4O3Color and Shape:White To Off-White SolidMolecular weight:196.17

