
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 8881 products of "Purines and Pyrimidine Derivatives"
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Clopidogrel 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 36.46Memantine Glucuronic Acid Conjugate (Furanose Form)
Formula:C18H29NO6Color and Shape:Off-White SolidMolecular weight:355.43Ondansetron EP Impurity F
CAS:Formula:C4H6N2Color and Shape:White To Off-White SolidMolecular weight:82.11Caffeine-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:197.16Febuxostat Impurity 5
CAS:Formula:C14H12N2O3SColor and Shape:Off-White To Pale Yellow SolidMolecular weight:288.32Sapropterin 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:503.59Theophylline 7-Acetic Acid
CAS:Formula:C9H10N4O4Color and Shape:White To Off-White SolidMolecular weight:238.20trans-Dihydro Tetrabenazine
CAS:Formula:C19H29NO3Color and Shape:White To Off-White SolidMolecular weight:319.45Fampridine Impurity 5 (3-Cyanopyridine)
CAS:Formula:C6H4N2Color and Shape:White To Off-White SolidMolecular weight:104.11Naratriptan
CAS:Formula:C17H25N3O2SColor and Shape:Off-White To Pale Yellow SolidMolecular weight:335.471-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:198.18Clopidogrel Metabolite II (Mixture of Diastereomers)
CAS:Formula:C25H26ClNO6SColor and Shape:White To Off-White SolidMolecular weight:503.99Prucalopride Impurity 37
Formula:C10H11BrClNO3Color and Shape:White To Off-White SolidMolecular weight:308.56Hydroxy Tetrabenazine (Dihydro Tetrabenazine) (Mixture of cis and trans Isomers)
Formula:C19H29NO3Color and Shape:Pale Yellow SolidMolecular weight:319.45Palonosetron EP Impurity D HCl (Palonosetron USP Related Compound E)
CAS:Formula:C19H22N2O·HClColor and Shape:White To Off-White SolidMolecular weight:294.40 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:203.25Oseltamivir Impurity 26
CAS:Formula:C9H12O4Color and Shape:White To Off-White SolidMolecular weight:184.19Tenofovir Related Compound 14
CAS:Formula:C8H11N5OColor and Shape:White To Off-White SolidMolecular weight:193.21Lifitegrast Impurity 15
Formula:C19H17NO6SColor and Shape:White To Off-White SolidMolecular weight:387.41Prucalopride Impurity 13
CAS:Formula:C9H8ClNO3Color and Shape:White To Off-White SolidMolecular weight:213.62(S)-Clopidogrel Carboxylic Acid N-Oxide
CAS:Formula:C15H14ClNO3SColor and Shape:White To Off-White SolidMolecular weight:323.79Oseltamivir-Fructose Adduct 1 (Amadori Rearrangement Product)
Formula:C22H38N2O9Color and Shape:White To Off-White SolidMolecular weight:474.55Trifluorothymine-13C-15N2
CAS:Formula:C413CH3F315N2O2Color and Shape:White To Off-White SolidMolecular weight:183.06rac-Liothyronine-15N-13C9
CAS:Formula:C613C9H12I315NO4Color and Shape:White To Off-White SolidMolecular weight:660.907-Hydroxy Ondansetron HCl
CAS:Formula:C18H19N3O2·HClColor and Shape:White To Off-White SolidMolecular weight:309.37 36.46Nicotinic Acid Related Compound (3-Ethylpyridine)
CAS:Formula:C7H9NColor and Shape:Pale Brown LiquidMolecular weight:107.16Lifitegrast Impurity 9
CAS:Formula:C20H20Cl2N2O5SColor and Shape:White To Off-White SolidMolecular weight:471.35Iopamidol EP Impurity E
CAS:Formula:C19H24I3N3O9Color and Shape:White To Off-White SolidMolecular weight:819.13rac-Clopidogrel-d3 Sulfate
CAS:Formula:C16H13D3ClNO2S·H2O4SColor and Shape:White To Off-White SolidMolecular weight:324.84 98.07Pyridoxine Impurity 10 HCl
CAS:Formula:C8H11NO4·HClColor and Shape:Off-White SolidMolecular weight:185.18 36.46Naratriptan Impurity 13
CAS:Formula:C20H32N4O4S2Color and Shape:White To Off-White SolidMolecular weight:456.62Pemetrexed-13C5 Disodium Salt
CAS:Formula:C1513C5H19N5O6·2NaColor and Shape:White To Off-White SolidMolecular weight:430.35 2*22.99Palonosetron USP Related Compound D ((R,S)-Palonosetron HCl)
CAS:Formula:C19H24N2O·HClColor and Shape:White To Off-White SolidMolecular weight:296.41 36.46Febuxostat Impurity 77
CAS:Formula:C15H16BrNO3SColor and Shape:Off-White SolidMolecular weight:370.26Eletriptan Impurity 1
Formula:C44H50N4O4S2Color and Shape:White To Off-White SolidMolecular weight:763.03Methotrexate Impurity 2 Trifluoroacetate
CAS:Formula:C21H27N9O3·C2HF3O2Color and Shape:Orange SolidMolecular weight:453.51 114.02Febuxostat Acyl Glucuronide
CAS:Formula:C22H24N2O9SColor and Shape:Pale Yellow SolidMolecular weight:492.50Almotriptan Impurity 8
CAS:Formula:C15H13Cl2N3OColor and Shape:White To Off-White SolidMolecular weight:322.19rac-3-Des[2-(dimethylamino)ethyl]-Zolmitriptan 3-Acetic Acid-d3
CAS:Formula:C14H11D3N2O4Color and Shape:White To Off-White SolidMolecular weight:277.29Pemetrexed Impurity 18 Sodium Salt
CAS:Formula:C21H22N5O6·NaColor and Shape:Pale Yellow SolidMolecular weight:440.44 22.99Hydantoic Acid (N-Carboxymethylurea)
CAS:Formula:C3H6N2O3Color and Shape:White To Off-White SolidMolecular weight:118.094-Desmethyl Istradefylline
CAS:Formula:C19H22N4O4Color and Shape:Pale Yellow SolidMolecular weight:370.41Tenofovir Impurity 87
Formula:C8H10BrN5Color and Shape:White To Off-White SolidMolecular weight:256.119-Desmethyl-α-Dihydro-Tetrabenazine
CAS:Formula:C18H27NO3Color and Shape:Off-White SolidMolecular weight:305.42Tetrabenazine Impurity 37
CAS:Formula:C19H27NO3Color and Shape:White To Off-White SolidMolecular weight:317.43N-Nitroso Zolmitriptan EP Impurity G (N-Nitroso Zolmitriptan USP Related Compound A, N-Nitroso N-Desmethyl Zolmitriptan)
CAS:Formula:C15H18N4O3Color and Shape:Off-White SolidMolecular weight:302.33Zolmitriptan EP Impurity E (Zolmitriptan USP Related Compound G)
CAS:Formula:C10H12N2O2Color and Shape:Pale Brown SolidMolecular weight:192.22Thiamine EP Impurity B Bromide HBr
Formula:C11H15N4OS·Br·HBrColor and Shape:Off-White SolidMolecular weight:251.33 79.90 80.91Thiamine EP Impurity A HCl
CAS:Formula:C12H16N4O4S2·HClColor and Shape:Off-White SolidMolecular weight:344.41 36.46Deutetrabenazine Metabolite M1 Sodium Salt (Mixture of Diastereomers)
CAS:Formula:C19H20D6NO5·NaMolecular weight:354.46 22.99Tenofovir Disoproxil Dimer
CAS:Formula:C39H60N10O20P2Color and Shape:White To Off-White SolidMolecular weight:1050.91Lifitegrast Impurity 13
CAS:Formula:C30H26Cl2N2O7SColor and Shape:White To Off-White SolidMolecular weight:629.51Pyrimidine Impurity 17
CAS:Formula:C27H28ClN7O3SColor and Shape:Off-White SolidMolecular weight:566.08Febuxostat Impurity 24
CAS:Formula:C18H21NO5SColor and Shape:White To Off-White SolidMolecular weight:363.43α-Hydroxy Tetrabenazine-d7 (trans-Dihydro Tetrabenazine-d7)
CAS:Formula:C19H22D7NO3Color and Shape:White To Off-White SolidMolecular weight:326.49Lifitegrast Impurity 14
CAS:Formula:C31H28Cl2N2O7SColor and Shape:White To Off-White SolidMolecular weight:643.53Prucalopride Impurity 36
CAS:Formula:C10H10ClNO4Color and Shape:White To Off-White SolidMolecular weight:243.64Thiamine-d4 Chloride HCl
CAS:Formula:C12H13D4N4OS·Cl·HClColor and Shape:White To Off-White SolidMolecular weight:269.38 35.45 36.46β-Nicotinamide Adenine Dinucleotide Sodium Salt
CAS:Formula:C21H26N7O14P2·NaMolecular weight:662.43 22.99Prucalopride Impurity 25
CAS:Formula:C14H18ClN3O2Color and Shape:White To Off-White SolidMolecular weight:295.77Doxofylline Impurity 12
CAS:Formula:C11H16N4O4Color and Shape:White To Off-White SolidMolecular weight:268.27Zolmitriptan Impurity 16 HCl
Formula:C10H12N2O2·HClColor and Shape:Pale Yellow SolidMolecular weight:192.22 36.46Naratriptan Impurity 12 Iodide
CAS:Formula:C20H27N4O4S2·IColor and Shape:Pale Yellow SolidMolecular weight:451.58 126.91Iopamidol EP Impurity G
CAS:Formula:C17H22I3N3O8Color and Shape:White To Off-White SolidMolecular weight:777.09Ondansetron-13C-d3
CAS:Formula:C1713CH16D3N3OColor and Shape:White To Off-White SolidMolecular weight:297.38Zolmitriptan EP Impurity G (Zolmitriptan USP Related Compound A, N-Desmethyl Zolmitriptan)
CAS:Formula:C15H19N3O2Color and Shape:Yellow SolidMolecular weight:273.34Thiamine EP Impurity A Sulfate
CAS:Formula:C12H16N4O4S2·H2SO4Color and Shape:Off-White SolidMolecular weight:344.40 98.07Lifitegrast Impurity 32
CAS:Formula:C20H20Cl2N2O5SColor and Shape:White To Off-White SolidMolecular weight:471.35Caffeine Impurity 1 Ammonium Salt
CAS:Formula:C8H11N4O3·NH4Color and Shape:White To Off-White SolidMolecular weight:211.20 18.04mono-Benzyl Miglustat Isomer 1
Formula:C17H27NO4Color and Shape:White To Off-White SolidMolecular weight:309.41Pyridoxine Impurity 12 HCl
CAS:Formula:C8H9NO3·HClColor and Shape:Off-White SolidMolecular weight:167.17 36.46Pyridoxine Impurity 1
Formula:C16H20N2O5Color and Shape:White To Off-White SolidMolecular weight:320.35Mono-POC Tenofovir Fumarate (Mixture of Diastereomers)
CAS:Formula:C17H26N5O10P·C4H4O4Color and Shape:White To Off-White SolidMolecular weight:491.39 116.07Clopidogrel 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:224.22Tenofovir Impurity 30
CAS:Formula:C15H18N5O4PColor and Shape:White To Off-White SolidMolecular weight:363.31Tenofovir Disoproxil USP Related Compound A ((S)-Tenofovir Disoproxil Fumarate)
CAS:Formula:C19H30N5O10P·C4H4O4Color and Shape:White To Off-White SolidMolecular weight:519.45 116.07Clopidogrel 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:432.98Tenofovir 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:309.28Thyroxamine HCl
CAS:Formula:C14H11I4NO2·HClColor and Shape:White To Off-White SolidMolecular weight:732.86 36.46rac-Eletriptan-d3 HBr
CAS:Formula:C22H23D3N2O2S·HBrColor and Shape:Pale Brown SolidMolecular weight:385.54 80.91Rizatriptan EP Impurity I Benzoate (N-Monodesmethyl Rizatriptan Benzoate)
CAS:Formula:C14H17N5·C7H6O2Color and Shape:White To Off-White SolidMolecular weight:255.33 122.12Tetrabenazine Impurity 41 (2R, 3R, 11bS)
CAS:Formula:C19H29NO3Color and Shape:Yellow SolidMolecular weight:319.45Tenofovir Impurity 37
CAS:Formula:C10H15O6PSColor and Shape:Pale Yellow LiquidMolecular weight:294.26Tenofovir Impurity 31 (Mixture of Isomers)
Formula:C16H20N5O4PColor and Shape:Colorless LiquidMolecular weight:2 377.34Tenofovir Impurity 86
Formula:C15H17N5O3SColor and Shape:White To Off-White SolidMolecular weight:347.396-Hydroxy Ondansetron HCl
CAS:Formula:C18H19N3O2·HClColor and Shape:Off-White SolidMolecular weight:309.37 36.462-Oxo-Clopidogrel (Mixture of Diastereomers)
CAS:Formula:C16H16ClNO3SColor and Shape:Pale Brown SolidMolecular weight:337.82Oseltamivir Impurity 54
CAS:Formula:C14H24N2O4Color and Shape:White To Off-White SolidMolecular weight:284.36D-Tyrosine Benzyl Ester HCl
CAS:Formula:C16H17NO3·HClColor and Shape:White To Off-White SolidMolecular weight:271.32 36.46Tenofovir Impurity 19
CAS:Formula:C21H29N6O5PColor and Shape:White To Off-White SolidMolecular weight:476.47Thiamine Triphosphate Trioctylamine
CAS:Formula:C12H19N4O10P3S·3C8H19NMolecular weight:504.28 3*129.25Pralatrexate-13C5-15N
CAS:Formula:C1813C5H23N615NO5Color and Shape:Pale Yellow SolidMolecular weight:483.44Tenofovir Impurity 8
CAS:Formula:C21H36N7O6PColor and Shape:White To Off-White SolidMolecular weight:513.54rac-Clopidogrel EP Impurity A (Clopidogrel Carboxylic Acid)
CAS:Formula:C15H14ClNO2SColor and Shape:Off-White SolidMolecular weight:307.79Prucalopride Impurity 7
Formula:C20H29N3O4Color and Shape:White To Off-White SolidMolecular weight:375.47Febuxostat Impurity 7
Formula:C16H18N2O4SColor and Shape:White To Off-White SolidMolecular weight:334.39Prucalopride Impurity 35
CAS:Formula:C8H8ClNO3Color and Shape:White To Off-White SolidMolecular weight:201.61Caffeine EP Impurity C (Caffeine USP Related Compound C, Isocaffeine)
CAS:Formula:C8H10N4O2Color and Shape:White To Off-White SolidMolecular weight:194.19Thiamine Chloride HCl
CAS:Formula:C12H17N4OS·Cl·HClColor and Shape:White To Off-White SolidMolecular weight:265.35 35.45 36.46Almotriptan EP Impurity A Malate (Almotriptan USP Related Compound C Malate)
CAS:Formula:C16H23N3O2S·C4H6O5Color and Shape:Off-White SolidMolecular weight:321.44 134.09Istradefylline Dimer Impurity 2
CAS:Formula:C40H48N8O8Color and Shape:White To Off-White SolidMolecular weight:768.87Istradefylline-13C-d3
CAS:Formula:C1913CH21D3N4O4Color and Shape:Pale Yellow SolidMolecular weight:388.453-Desmethyl Istradefylline
CAS:Formula:C19H22N4O4Color and Shape:Pale Yellow SolidMolecular weight:370.41(S)-Clopidogrel N-Oxide
CAS:Formula:C16H16ClNO3SColor and Shape:Pale Yellow Semi-SolidMolecular weight:337.826-Mercaptopurine-13C-15N2 (Azathioprine EP Impurity B-13C-15N2)
CAS:Formula:C413CH4N215N2SMolecular weight:155.15Istradefylline Dimer Impurity 1 (Mixture of Diastereomers)
Formula:C40H50N8O8Color and Shape:White To Off-White SolidMolecular weight:770.89Doxofylline Impurity 9
CAS:Formula:C13H20N4O4Color and Shape:White To Off-White SolidMolecular weight:296.33rac-Clopidogrel EP Impurity F HCl
CAS:Formula:C15H16ClNO2S·HClColor and Shape:White To Off-White SolidMolecular weight:309.82 36.46Allopurinol EP Impurity D (Allopurinol USP Related Compound D)
CAS:Formula:C6H9N3O2Color and Shape:Pale Brown SolidMolecular weight:155.16Tenofovir Impurity 29
CAS:Formula:C21H22N5O4PColor and Shape:Pale Yellow SolidMolecular weight:439.41Tenofovir Related Compound 10
CAS:Formula:C8H11N5OColor and Shape:Off-White SolidMolecular weight:193.21Eletriptan Impurity 21
CAS:Formula:C22H24N2O2SColor and Shape:Pale Yellow SolidMolecular weight:380.51Clopidogrel EP Impurity C Sulfate (Clopidogrel USP Related Compound C, (R)-Clopidogrel Sulfate)
CAS:Formula:C16H16ClNO2S·H2SO4Color and Shape:White To Off-White SolidMolecular weight:321.82 98.07Prucalopride Impurity 29
Formula:C17H24ClN3O2Color and Shape:White To Off-White SolidMolecular weight:337.85Tetrabenazine Impurity 42 (2S, 3S, 11bR)
CAS:Formula:C19H29NO3Color and Shape:Off-White SolidMolecular weight:319.45Methotrexate EP Impurity I Sodium Salt (Methotrexate-1-Monomethyl Ester Sodium Salt)
CAS:Formula:C21H23N8O5·NaMolecular weight:467.47 22.994-Amino-3-Hydroxy-Pyridine
CAS:Formula:C5H6N2OColor and Shape:White To Off-White SolidMolecular weight:110.12Pemetrexed EP Impurity D Monosodium Salt
CAS:Formula:C25H27N6O9·NaColor and Shape:Blue SolidMolecular weight:555.52 22.99
