
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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Memantine 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:196.17Zolmitriptan 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:309.41Ondansetron EP Impurity B
CAS:Formula:C37H38N6O2Color and Shape:Pale Yellow SolidMolecular weight:598.75Theophylline 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:319.45Theophylline Impurity 6
CAS:Formula:C16H17ClN4O2Color and Shape:White To Off-White SolidMolecular weight:332.79L-Kynurenine-13C4-15N
CAS:Formula:C613C4H12N15NO3Color and Shape:Pale Yellow SolidMolecular weight:213.18Mono-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 79.90Theophylline EP Impurity F (Theophylline-Ethylenediamine EP Impurity F, Diprophylline EP Impurity C, Etofylline)
CAS:Formula:C9H12N4O3Color and Shape:White To Off-White SolidMolecular weight:224.22Doxofylline Impurity 10
CAS:Formula:C11H14N4O4Color and Shape:White To Off-White SolidMolecular weight:266.26Theophylline (Dimenhydrinate EP Impurity A, Diprophylline EP Impurity B)
CAS:Formula:C7H8N4O2Color and Shape:White To Off-White SolidMolecular weight:180.17Diethyl Tenofovir
CAS:Formula:C13H22N5O4PColor and Shape:White To Off-White SolidMolecular weight:343.32Oseltamivir EP Impurity A HCl
CAS:Formula:C14H24N2O4·HClColor and Shape:White To Off-White SolidMolecular weight:284.36 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:316.38Idelalisib Metabolite (GS-563117)
Formula:C22H18FN7O2Color and Shape:White To Off-White SolidMolecular weight:431.43Tenofovir Impurity 132
CAS:Formula:C14H22N5O7PColor and Shape:White To Off-White SolidMolecular weight:403.33Methotrexate EP Impurity F-13C-d3 Disodium Salt ((R)-Methotrexate-13C-d3 Disodium Salt)
CAS:Formula:C1913CH17D3N8O5·2NaMolecular weight:456.44 2*22.99N-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:519.45 116.07Naratriptan Impurity 10
CAS:Formula:C20H32N4O4S2Color and Shape:White To Off-White SolidMolecular weight:456.62Tegaserod 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 36.46Temozolomide Impurity 10
CAS:Formula:C5H8N4OColor and Shape:White To Off-White SolidMolecular weight:140.15Frovatriptan Impurity 9
Formula:C14H16N2O2Color and Shape:Off-White To Pale Yellow SolidMolecular weight:244.30Tegaserod-13C-d3 Maleate
CAS:Formula:C1513CH20D3N5O·C4H4O4Color and Shape:Pale Yellow SolidMolecular weight:305.40 116.07Frovatriptan-d3 Succinate
CAS:Formula:C14H14D3N3O·C4H6O4Color and Shape:White To Off-White SolidMolecular weight:246.33 118.09Liothyronine EP Impurity D
CAS:Formula:C14H8I4O4Color and Shape:White To Off-White SolidMolecular weight:747.83Hydantoic Acid-13C2,15N Ethyl Ester
CAS:Formula:C313C2H10N15NO3Color and Shape:White To Off-White SolidMolecular weight:149.126-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:272.37Clopidogrel 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 36.468-Hydroxy Ondansetron
CAS:Formula:C18H19N3O2Color and Shape:White To Off-White SolidMolecular weight:309.37Memantine-Glycine Adduct HCl
CAS:Formula:C14H23NO2·HClColor and Shape:White To Off-White SolidMolecular weight:237.34 36.46Zolmitriptan Impurity 8 (Mixture of Diastereomers)
Formula:C16H21N3O4Color and Shape:Pale Brown SolidMolecular weight:319.36Clopidogrel EP Impurity E (R-Isomer)
CAS:Formula:C15H15ClN2OSColor and Shape:White To Off-White SolidMolecular weight:306.81Pemetrexed EP Impurity D Monosodium Salt
CAS:Formula:C25H27N6O9·NaColor and Shape:Blue SolidMolecular weight:555.52 22.99Palonosetron USP Related Compound A (Palonosetron N-Oxide)
CAS:Formula:C19H24N2O2Color and Shape:White To Off-White SolidMolecular weight:312.41Zolmitriptan EP Impurity C (Zolmitriptan USP Related Compound F)
CAS:Formula:C38H53N7O4Color and Shape:Yellow SolidMolecular weight:671.89Thiamine-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 36.46Prucalopride Impurity 25
CAS:Formula:C14H18ClN3O2Color and Shape:White To Off-White SolidMolecular weight:295.77Pyridoxine Impurity 6 DiHCl
Formula:C16H20N2O5·2HClColor and Shape:White To Off-White SolidMolecular weight:320.35 2*36.46

