
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 8901 products of "Purines and Pyrimidine Derivatives"
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Prucalopride Impurity 1
CAS:Formula:C18H24ClN3O3Color and Shape:Off-White SolidMolecular weight:365.86Naratriptan
CAS:Formula:C17H25N3O2SColor and Shape:Off-White To Pale Yellow SolidMolecular weight:335.47Febuxostat 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:137.16 126.91Caffeine Impurity 3
CAS:Formula:C7H10N4O3Color and Shape:White To Off-White SolidMolecular weight:198.18Iopamidol 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:429.49Rizatriptan EP Impurity I Benzoate (N-Monodesmethyl Rizatriptan Benzoate)
CAS:Formula:C14H17N5·C7H6O2Color and Shape:White To Off-White SolidMolecular weight:255.33 122.12Prucalopride 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*36.46Memantine 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:312.41Memantine USP Related Compound A
CAS:Formula:C12H20Color and Shape:Colorless LiquidMolecular weight:164.29rac-Liothyronine-15N-13C9
CAS:Formula:C613C9H12I315NO4Color and Shape:White To Off-White SolidMolecular weight:660.90Clopidogrel Impurity 34 Sulfate
Formula:C24H21Cl2NO4S·H2SO4Color and Shape:White To Off-White SolidMolecular weight:490.40 98.07Tenofovir Impurity 7 HCl
CAS:Formula:C6H13NO2·HClColor and Shape:White To Off-White SolidMolecular weight:131.18 36.46Caffeine-d9 (Pentoxifylline EP Impurity F-d9, Theophylline EP Impurity A-d9, Theophylline-Ethylenediamine EP Impurity A-d9)
CAS:Formula:C8HD9N4O2Color and Shape:White To Off-White SolidMolecular weight:203.25Ondansetron 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:123.11Almotriptan EP Impurity B Malate (Almotriptan Dimer Impurity Malate)
CAS:Formula:C30H41N5O2S·C4H6O5Color and Shape:White To Off-White SolidMolecular weight:535.75 134.09(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:643.53Oseltamivir EP Impurity E HCl
CAS:Formula:C15H26N2O4·HClColor and Shape:Off-White SolidMolecular weight:298.39 36.46Mono-POC Ethyl Tenofovir Fumarate (Mixture of Diastereomers)
CAS:Formula:C16H26N5O7P·C4H4O4Color and Shape:White To Off-White SolidMolecular weight:431.39 116.07Trifluridine-13C-15N2
CAS:Formula:C913CH11F315N2O5Color and Shape:White To Off-White SolidMolecular weight:299.18Pyridoxine 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 35.45Eletriptan Impurity 7
CAS:Formula:C8H7ClO2SColor and Shape:White To Off-White SolidMolecular weight:202.65Iopamidol EP Impurity D
CAS:Formula:C14H15I3N2O7Color and Shape:White To Off-White SolidMolecular weight:703.991,2-Dimethyl Adamantane (Mixture of Diastereomers)
CAS:Formula:C12H20Color and Shape:White To Off-White SolidMolecular weight:164.29Trifluridine 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 22.99Almotriptan Related Compound (Aniline Precursor)
CAS:Formula:C11H16N2O2SColor and Shape:Off-White SolidMolecular weight:240.332-Oxo-Clopidogrel (Mixture of Diastereomers)
CAS:Formula:C16H16ClNO3SColor and Shape:Pale Brown SolidMolecular weight:337.82Doxofylline 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:566.08Clopidogrel Ethyl Ester Sulfate
CAS:Formula:C17H18ClNO2S·H2SO4Color and Shape:White To Off-White SolidMolecular weight:335.85 98.07Memantine 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:503.99Pyridoxine EP Impurity A
CAS:Formula:C8H9NO2Color and Shape:White To Off-White SolidMolecular weight:151.17Frovatriptan Succinate
CAS:Formula:C14H17N3O·C4H6O4Color and Shape:White To Off-White SolidMolecular weight:243.31 118.09Pralatrexate Impurity 15 (Pralatrexate Penta-L-Glutamate)
Formula:C48H58N12O20Molecular weight:1123.06Oseltamivir EP Impurity D
CAS:Formula:C11H13NO4Color and Shape:Off-White SolidMolecular weight:223.23Iopamidol EP Impurity G
CAS:Formula:C17H22I3N3O8Color and Shape:White To Off-White SolidMolecular weight:777.09Clopidogrel EP Impurity E (S-Isomer)
CAS:Formula:C15H15ClN2OSColor and Shape:White To Off-White SolidMolecular weight:306.81Thiamine Impurity 9
CAS:Formula:C12H15N3O2S2Color and Shape:White To Off-White SolidMolecular weight:297.39N,N'-Dinitroso Caffeine EP Impurity E (N,N'-Dinitroso Caffeidine)
CAS:Formula:C7H10N6O3Molecular weight:226.20cis-Dihydro Tetrabenazine-d7
CAS:Formula:C19H22D7NO3Color and Shape:White To Off-White SolidMolecular weight:326.49Theophylline EP Impurity E
CAS:Formula:C7H8N4O3Color and Shape:White To Off-White SolidMolecular weight:196.17Methotrexate EP Impurity H (Methotrexate-5-Monomethyl Ester)
CAS:Formula:C21H24N8O5Color and Shape:Yellow SolidMolecular weight:468.47Zolmitriptan 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:309.41Istradefylline Impurity 7
CAS:Formula:C20H24N4O4Color and Shape:Pale Yellow SolidMolecular weight:384.44Theophylline 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:319.45L-Kynurenine-13C4-15N
CAS:Formula:C613C4H12N15NO3Color and Shape:Pale Yellow SolidMolecular weight:213.18Trifluridine Impurity 10
CAS:Formula:C5H5F3N2O2Color and Shape:White To Off-White SolidMolecular weight:182.10Mono-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 79.90Trifluridine Impurity 9 Sodium Salt
CAS:Formula:C5H5N2O4·NaColor and Shape:Yellow SolidMolecular weight:157.11 22.99Theophylline EP Impurity F (Theophylline-Ethylenediamine EP Impurity F, Diprophylline EP Impurity C, Etofylline)
CAS:Formula:C9H12N4O3Color and Shape:White To Off-White SolidMolecular weight:224.22Memantine USP Related Compound F (Free Form)
CAS:Formula:C12H21NOColor and Shape:White To Off-White SolidMolecular weight:195.31Diethyl Tenofovir
CAS:Formula:C13H22N5O4PColor and Shape:White To Off-White SolidMolecular weight:343.32Pyridoxal HCl
CAS:Formula:C8H9NO3·HClColor and Shape:White To Off-White SolidMolecular weight:167.16 36.46Clopidogrel Impurity 24 HCl
CAS:Formula:C7H9NS·HClColor and Shape:Off-White SolidMolecular weight:139.22 36.46Oseltamivir 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:316.38Tenofovir Impurity 132
CAS:Formula:C14H22N5O7PColor and Shape:White To Off-White SolidMolecular weight:403.33N-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:519.45 116.07Tegaserod 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 36.46Temozolomide 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:244.30Nicotinic Acid EP Impurity D (Isocinchomeronic Acid)
CAS:Formula:C7H5NO4Color and Shape:Pale Yellow SolidMolecular weight:167.12Tegaserod-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:747.83Oseltamivir HCl
CAS:Formula:C16H28N2O4·HClColor and Shape:White To Off-White SolidMolecular weight:312.41 36.46Hydantoic Acid-13C2,15N Ethyl Ester
CAS:Formula:C313C2H10N15NO3Color and Shape:White To Off-White SolidMolecular weight:149.12Oxypurinol-13C3-15N3
CAS:Formula:C213C3H4N15N3O2Color and Shape:Off-White SolidMolecular weight:158.07N-Nitroso Methotrexate EP Impurity L (N-Methyl-N-Nitrosoaniline)
Formula:C13H15N3O6Molecular weight:309.286-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:272.37Thiamine-d4 Chloride HCl
CAS:Formula:C12H13D4N4OS·Cl·HClColor and Shape:White To Off-White SolidMolecular weight:269.38 35.45 36.46Memantine Lactose Adduct
CAS:Formula:C24H41NO10Color and Shape:Pale Brown SolidMolecular weight:503.59Prucalopride Impurity 36
CAS:Formula:C10H10ClNO4Color and Shape:White To Off-White SolidMolecular weight:243.64Lifitegrast Impurity 14
CAS:Formula:C31H28Cl2N2O7SColor and Shape:White To Off-White SolidMolecular weight:643.53Clopidogrel Impurity 32 HCl
CAS:Formula:C16H18ClNO2S·HClColor and Shape:White To Off-White SolidMolecular weight:323.84 36.46Caffeine EP Impurity F (Caffeine USP Related Compound F, Paraxanthine)
CAS:Formula:C7H8N4O2Color and Shape:Off-White SolidMolecular weight:180.17α-Hydroxy Tetrabenazine-d7 (trans-Dihydro Tetrabenazine-d7)
CAS:Formula:C19H22D7NO3Color and Shape:White To Off-White SolidMolecular weight:326.49Zolmitriptan EP Impurity C (Zolmitriptan USP Related Compound F)
CAS:Formula:C38H53N7O4Color and Shape:Yellow SolidMolecular weight:671.89Pyridoxine Impurity 6 DiHCl
Formula:C16H20N2O5·2HClColor and Shape:White To Off-White SolidMolecular weight:320.35 2*36.46Tenofovir Impurity 19
CAS:Formula:C21H29N6O5PColor and Shape:White To Off-White SolidMolecular weight:476.47

