
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 8902 products of "Purines and Pyrimidine Derivatives"
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Memantine USP Related Compound A
CAS:Formula:C12H20Color and Shape:Colorless LiquidMolecular weight:164.29Clopidogrel Carboxylic Acid N-Oxide
Formula:C15H14ClNO3SColor and Shape:White To Off-White SolidMolecular weight:323.79Oseltamivir Impurity 14 DiHCl
CAS:Formula:C12H22N2O3·2HClColor and Shape:White To Off-White SolidMolecular weight:242.32 2 36.46Mono-POC Ethyl Tenofovir Fumarate (Mixture of Diastereomers)
CAS:Formula:C16H26N5O7P·C4H4O4Color and Shape:White To Off-White SolidMolecular weight:431.39 116.07Clopidogrel Impurity 4 Bromide
CAS:Formula:C14H13ClNS·BrColor and Shape:White To Off-White SolidMolecular weight:262.78 79.90Pralatrexate Impurity 14 (Pralatrexate Tetra-L-Glutamate)
Formula:C43H51N11O17Molecular weight:993.94(S)-Frovatriptan Succinate
Formula:C14H17N3O·C4H6O4Color and Shape:White To Off-White SolidMolecular weight:243.31 118.09Methotrexate EP Impurity I Enantiomer ((R)-Methotrexate-1- Monomethyl Ester)
CAS:Formula:C21H24N8O5Molecular weight:468.47Allopurinol EP Impurity C
CAS:Formula:C6H6N6OColor and Shape:White To Off-White SolidMolecular weight:178.16Istradefylline Impurity 7
CAS:Formula:C20H24N4O4Color and Shape:Pale Yellow SolidMolecular weight:384.44Lifitegrast Impurity 43
Formula:C30H26Cl2N2O7SColor and Shape:White To Off-White SolidMolecular weight:629.51Fampridine-d4 (Dalfampridine-d4, 4-Aminopyridine-d4)
CAS:Formula:C5H2D4N2Color and Shape:Off-White SolidMolecular weight:98.14Pemetrexed Impurity 10
CAS:Formula:C19H17N5O5Color and Shape:White To Off-White SolidMolecular weight:395.38Lifitegrast Impurity 14
CAS:Formula:C31H28Cl2N2O7SColor and Shape:White To Off-White SolidMolecular weight:643.53Trifluridine Impurity 9 Sodium Salt
CAS:Formula:C5H5N2O4·NaColor and Shape:Yellow SolidMolecular weight:157.11 22.99Febuxostat Impurity 39
CAS:Formula:C13H13NO3SColor and Shape:White To Off-White SolidMolecular weight:263.31Lifitegrast Impurity 15
Formula:C19H17NO6SColor and Shape:White To Off-White SolidMolecular weight:387.41Lifitegrast Impurity 3
CAS:Formula:C36H30Cl2N2O7SColor and Shape:Pale Orange SolidMolecular weight:705.60Ondansetron EP Impurity A (Ondansetron USP Related Compound A (Free Form))
CAS:Formula:C16H20N2OColor and Shape:White To Off-White SolidMolecular weight:256.35Phenylpyruvate Calcium Salt (2-Keto-Phenylalanine Calcium Salt)
Formula:C9H7O3·CaColor and Shape:White To Off-White SolidMolecular weight:2*163.15 40.08Isopropyl Tenofovir Fumarate
CAS:Formula:C12H20N5O4P·C4H4O4Color and Shape:White To Off-White SolidMolecular weight:329.30 116.07Oseltamivir Impurity 61
CAS:Formula:C16H26N4O4Color and Shape:White To Off-White SolidMolecular weight:338.41rac-Clopidogrel EP Impurity F HCl
CAS:Formula:C15H16ClNO2S·HClColor and Shape:White To Off-White SolidMolecular weight:309.82 36.46Prucalopride Impurity 26
Formula:C18H26BrN3O3Color and Shape:White To Off-White SolidMolecular weight:412.33rac-Clopidogrel-d4 Hydrogen Sulfate
CAS:Formula:C16H12D4ClNO2S·H2SO4Color and Shape:White To Off-White SolidMolecular weight:325.85 98.07Ondansetron Impurity 1
CAS:Formula:C12H11NOColor and Shape:White To Off-White SolidMolecular weight:185.23Phenylhydrazine HCl
CAS:Formula:C6H8N2·HClColor and Shape:White To Off-White SolidMolecular weight:108.14 36.46Pyridoxine Impurity 2
CAS:Formula:C16H20N2O5Color and Shape:White To Off-White SolidMolecular weight:320.35Clopidogrel Impurity 1 Chloride
CAS:Formula:C16H13ClNO2S·ClColor and Shape:Off-White SolidMolecular weight:318.79 35.45Febuxostat Impurity 77
CAS:Formula:C15H16BrNO3SColor and Shape:Off-White SolidMolecular weight:370.26Febuxostat Impurity 57
CAS:Formula:C16H16N2O3SColor and Shape:White To Off-White SolidMolecular weight:316.38Allopurinol USP Related Compound F
CAS:Formula:C12H14N4O4Color and Shape:Pale Yellow SolidMolecular weight:278.27Febuxostat Impurity 80
CAS:Formula:C19H21NO5SColor and Shape:White To Off-White SolidMolecular weight:375.44Nucleotide Compound Library
<p>A unique collection of xnum nucleoside and nucleotide analogues, can be used for research and development of anti-viral, anti-tumor, anti-fungal, and anti-</p>Color and Shape:Odour SolidRizatriptan EP Impurity I Benzoate (N-Monodesmethyl Rizatriptan Benzoate)
CAS:Formula:C14H17N5·C7H6O2Color and Shape:White To Off-White SolidMolecular weight:255.33 122.12Methylguanidine HCl
CAS:Formula:C2H7N3·HClColor and Shape:White To Off-White SolidMolecular weight:73.10 36.46Caffeine (Pentoxifylline EP Impurity F, Theophylline EP Impurity A, Theophylline-Ethylenediamine EP Impurity A)
CAS:Formula:C8H10N4O2Color and Shape:White To Off-White SolidMolecular weight:194.19Clopidogrel Ethyl Ester Sulfate
CAS:Formula:C17H18ClNO2S·H2SO4Color and Shape:White To Off-White SolidMolecular weight:335.85 98.07Temozolomide Impurity 10
CAS:Formula:C5H8N4OColor and Shape:White To Off-White SolidMolecular weight:140.15Trifluridine Impurity 6
CAS:Formula:C10H11F3N2O5Color and Shape:White To Off-White SolidMolecular weight:296.20Migalastat HCl
CAS:Formula:C6H13NO4·HClColor and Shape:White To Off-White SolidMolecular weight:163.17 36.46Rizatriptan Impurity B Oxalate
CAS:Formula:C13H15N5·C2H2O4Color and Shape:White To Off-White SolidMolecular weight:241.30 90.04Pralatrexate Impurity 15 (Pralatrexate Penta-L-Glutamate)
Formula:C48H58N12O20Molecular weight:1123.06Sumatriptan Succinate
CAS:Formula:C14H21N3O2S·C4H6O4Color and Shape:White To Off-White SolidMolecular weight:295.40 118.09Pyridoxine Impurity 8 DiHCl
Formula:C16H20N2O5·2HClColor and Shape:White To Off-White SolidMolecular weight:320.35 2 36.46Prucalopride Impurity 6
CAS:Formula:C18H27N3O3Color and Shape:White To Off-White SolidMolecular weight:333.43Pralatrexate-13C5-15N
CAS:Formula:C1813C5H23N615NO5Color and Shape:Pale Yellow SolidMolecular weight:483.44Almotriptan Impurity 6 DiHCl (Almotriptan N-Dimer Impurity DiHCl)
Formula:C30H41N5O2S·2HClColor and Shape:White To Off-White SolidMolecular weight:535.76 2 36.46Memantine EP Impurity D HCl (Memantine USP Related Compound I)
CAS:Formula:C12H21N·HClColor and Shape:Off-White SolidMolecular weight:179.31 36.46Prucalopride Succinate
CAS:Formula:C18H26ClN3O3·C4H6O4Color and Shape:White To Off-White SolidMolecular weight:367.87 118.09Prucalopride Impurity 44
Formula:C8H9BrClNOColor and Shape:White To Off-White SolidMolecular weight:250.52Iopamidol EP Impurity D
CAS:Formula:C14H15I3N2O7Color and Shape:White To Off-White SolidMolecular weight:703.99Zolmitriptan Impurity 14
CAS:Formula:C19H25N3O4Color and Shape:White To Off-White SolidMolecular weight:359.43Palonosetron EP Impurity D HCl (Palonosetron USP Related Compound E)
CAS:Formula:C19H22N2O·HClColor and Shape:White To Off-White SolidMolecular weight:294.40 36.46Istradefylline 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:2 377.34Memantine EP Impurity F (N-Acetyl Memantine)
CAS:Formula:C14H23NOColor and Shape:White To Off-White SolidMolecular weight:221.34n-POC-POC Tenofovir
CAS:Formula:C19H30N5O10PColor and Shape:Colorless Semi-SolidMolecular weight:519.45Memantine-Galactose Adduct 1
Formula:C18H31NO5Color and Shape:Pale Yellow SolidMolecular weight:341.45Thiamine EP Impurity F Bromide HBr
CAS:Formula:C13H19N4OS·Br·HBrColor and Shape:White To Off-White SolidMolecular weight:279.39 79.90 80.91Clopidogrel EP Impurity A (R-Isomer) ((R)-Clopidogrel Carboxylic Acid)
CAS:Formula:C15H14ClNO2SColor and Shape:Off-White SolidMolecular weight:307.79Tenofovir Disoproxil USP Related Compound A ((S)-Tenofovir Disoproxil Fumarate)
CAS:Formula:C19H30N5O10P·C4H4O4Color and Shape:White To Off-White SolidMolecular weight:519.45 116.07trans-Dihydro Tetrabenazine
CAS:Formula:C19H29NO3Color and Shape:White To Off-White SolidMolecular weight:319.45Pyridoxine EP Impurity A
CAS:Formula:C8H9NO2Color and Shape:White To Off-White SolidMolecular weight:151.172-Oxo-Clopidogrel (Mixture of Diastereomers)
CAS:Formula:C16H16ClNO3SColor and Shape:Pale Brown SolidMolecular weight:337.82Prucalopride Impurity 14
CAS:Formula:C10H10ClNO3Color and Shape:Pale Yellow SolidMolecular weight:227.64Memantine EP Impurity G (Memantine USP Related Compound E)
CAS:Formula:C13H21NOColor and Shape:White To Off-White SolidMolecular weight:207.32Lifitegrast Impurity 8
CAS:Formula:C29H24Cl2N2O7SColor and Shape:White To Off-White SolidMolecular weight:615.48Prucalopride Impurity 39
CAS:Formula:C12H12Br2ClNO4Color and Shape:White To Off-White SolidMolecular weight:429.49Miglustat HCl
CAS:Formula:C10H21NO4·HClColor and Shape:White To Off-White SolidMolecular weight:219.28 36.46Almotriptan EP Impurity F Malate
CAS:Formula:C19H29N3O2S·C4H6O5Color and Shape:Off-White SolidMolecular weight:363.53 134.09Febuxostat Impurity 34
CAS:Formula:C15H17NO3SColor and Shape:White To Off-White SolidMolecular weight:291.37(S)-Frovatriptan-d3 Succinate
CAS:Formula:C14H14N3OD3·C4H6O4Color and Shape:White To Off-White SolidMolecular weight:246.33 118.09Nicotinic Acid EP Impurity E (Isoniazid EP Impurity A)
CAS:Formula:C6H5NO2Color and Shape:White To Off-White SolidMolecular weight:123.11Tenofovir Disoproxil Impurity EOC-POCPMPA Fumarate
CAS:Formula:C18H28N5O10P·C4H4O4Color and Shape:White To Off-White SolidMolecular weight:505.43 116.07D-Phenylalaninyl-D-Phenylalanine-d5
CAS:Formula:C18H15D5N2O3Color and Shape:White To Off-White SolidMolecular weight:317.40Palonosetron-d3 HCl
CAS:Formula:C19H21D3N2O·HClColor and Shape:White To Off-White SolidMolecular weight:299.43 36.46Clopidogrel EP Impurity E (R-Isomer)
CAS:Formula:C15H15ClN2OSColor and Shape:White To Off-White SolidMolecular weight:306.81Thiamine EP Impurity G Chloride HCl
CAS:Formula:C14H19N4O2S·Cl·HClColor and Shape:White To Off-White SolidMolecular weight:307.39 35.45 36.46Memantine Glucuronic Acid Conjugate (Furanose Form)
Formula:C18H29NO6Color and Shape:Off-White SolidMolecular weight:355.43Tyrosine Impurity 2 HCl
CAS:Formula:C13H20N2O2·HClColor and Shape:Colorless LiquidMolecular weight:236.32 36.46Febuxostat USP Related Compound D
CAS:Formula:C16H16N2O3SColor and Shape:Pale Grey SolidMolecular weight:316.38Theophylline-Ethylenediamine EP Impurity G (Pentoxifylline EP Impurity A, Caffeine EP Impurity D, Caffeine USP Related Compound D, Theobromine)
CAS:Formula:C7H8N4O2Color and Shape:Off-White SolidMolecular weight:180.17Tetrabenazine Impurity 36
CAS:Formula:C19H27NO3Color and Shape:Pale Yellow SolidMolecular weight:317.436-Hydroxy Ondansetron
CAS:Formula:C18H19N3O2Color and Shape:White To Off-White SolidMolecular weight:309.37Thiamine Impurity 8
CAS:Formula:C7H9N3O2Color and Shape:White To Off-White SolidMolecular weight:167.17Tenofovir Disoproxil Carbamate
CAS:Formula:C23H36N5O12PColor and Shape:Colorless Sticky Oil (Low M P )Molecular weight:605.54Doxofylline-d4
CAS:Formula:C11H10D4N4O4Color and Shape:White To Off-White SolidMolecular weight:270.28Tenofovir Impurity 19
CAS:Formula:C21H29N6O5PColor and Shape:White To Off-White SolidMolecular weight:476.47Tenofovir Related Compound 14
CAS:Formula:C8H11N5OColor and Shape:White To Off-White SolidMolecular weight:193.21Oseltamivir Impurity 26
CAS:Formula:C9H12O4Color and Shape:White To Off-White SolidMolecular weight:184.19N-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:302.33Tegaserod-13C-d3 Maleate
CAS:Formula:C1513CH20D3N5O·C4H4O4Color and Shape:Pale Yellow SolidMolecular weight:305.40 116.07Tenofovir Impurity 38
CAS:Formula:C8H11O6PSColor and Shape:White To Off-White SolidMolecular weight:266.20Oseltamivir EP Impurity D
CAS:Formula:C11H13NO4Color and Shape:Off-White SolidMolecular weight:223.23Miglustat-d9 HCl
CAS:Formula:C10H12D9NO4·HClColor and Shape:Off-White SolidMolecular weight:228.34 36.46Prucalopride Impurity 5
CAS:Formula:C20H28ClN3O4Color and Shape:White To Off-White SolidMolecular weight:409.91Theophylline Impurity 19 (Mixture of Z and E Isomers)
CAS:Formula:C8H12O4Color and Shape:Colorless LiquidMolecular weight:172.18rac-Iopamidol EP Impurity J
CAS:Formula:C16H20I3N3O7Color and Shape:White To Off-White SolidMolecular weight:747.06Nicotinic Acid EP Impurity I
CAS:Formula:C5H3N3O4Color and Shape:Pale Green SolidMolecular weight:169.10Oseltamivir Impurity 65
CAS:Formula:C17H28N2O5Color and Shape:White To Off-White SolidMolecular weight:340.42Theophylline EP Impurity D (Theophylline USP Related Compound D, Diprophylline EP Impurity A, Theophyllidine)
CAS:Formula:C6H10N4OColor and Shape:White To Off-White SolidMolecular weight:154.17Telbivudine-d4
CAS:Formula:C10H10D4N2O5Color and Shape:White To Off-White SolidMolecular weight:246.26Oseltamivir EP Impurity C-d3 HCl (Oseltamivir-d3 Carboxylic Acid HCl)
CAS:Formula:C14H21D3N2O4·HClColor and Shape:White To Off-White SolidMolecular weight:287.38 36.46Tenofovir Impurity 43
CAS:Formula:C9H12O3SColor and Shape:White Solid To Semi-SolidMolecular weight:200.25Rizatriptan EP Impurity G
CAS:Formula:C13H13ClN4Color and Shape:White To Off-White SolidMolecular weight:260.73Tenofovir diphosphate (sodium salt)
<p>Tenofovir diphosphate blocks HIV, HBV replication (Ki: 0.022-1.55μM), sparing normal DNA polymerases; formed from prodrugs inside cells.</p>Color and Shape:SolidEletriptan Impurity 3 (Mixture of Diastereomers)
CAS:Formula:C44H48N4O4S2Color and Shape:Pale Yellow SolidMolecular weight:761.01Frovatriptan Impurity 9
Formula:C14H16N2O2Color and Shape:Off-White To Pale Yellow SolidMolecular weight:244.30Trifluridine Impurity 10
CAS:Formula:C5H5F3N2O2Color and Shape:White To Off-White SolidMolecular weight:182.10Frovatriptan-d3 Succinate
CAS:Formula:C14H14D3N3O·C4H6O4Color and Shape:White To Off-White SolidMolecular weight:246.33 118.09rac-Clopidogrel EP Impurity A-d4 (rac-Clopidogrel-d4 Carboxylic Acid)
CAS:Formula:C15H10D4ClNO2SColor and Shape:White To Off-White SolidMolecular weight:311.82L-Thyroxine (Tetraiodothyronine)
CAS:Formula:C15H11I4NO4Color and Shape:White To Off-White SolidMolecular weight:776.87Tenofovir Alafenamide-d5 (Mixture of Diastereomers)
CAS:Formula:C21H24D5N6O5PColor and Shape:Yellow SolidMolecular weight:481.50Tenofovir Impurity 68
CAS:Formula:C18H26N10O7P2Color and Shape:White To Off-White SolidMolecular weight:556.42Frovatriptan Succinate
CAS:Formula:C14H17N3O·C4H6O4Color and Shape:White To Off-White SolidMolecular weight:243.31 118.09Diethyl Tenofovir
CAS:Formula:C13H22N5O4PColor and Shape:White To Off-White SolidMolecular weight:343.32Thiamine Impurity 23 Bromide HBr
CAS:Formula:C12H14N5O·Br·HBrColor and Shape:Off-White SolidMolecular weight:244.28 79.90 80.91Naratriptan Impurity 8
CAS:Formula:C16H22N2Color and Shape:White To Off-White SolidMolecular weight:242.37Clopidogrel Metabolite II (Mixture of Diastereomers)
CAS:Formula:C25H26ClNO6SColor and Shape:White To Off-White SolidMolecular weight:503.99Febuxostat Impurity 24
CAS:Formula:C18H21NO5SColor and Shape:White To Off-White SolidMolecular weight:363.43


