Açúcares e Nucleobases da Espinha Dorsal

Fluorouracil is a pyrimidine-based chemotherapy drug that inhibits DNA synthesis by inhibiting the activity of the enzyme thymidylate synthase, thereby preventing the production of thymine nucleotides. Fluorouracil is used to treat cancers such as colorectal cancer and breast cancer. It is also used as adjuvant therapy for head and neck cancer. Fluorouracil works by binding to the enzyme dihydrofolate reductase, which is required for the synthesis of DNA precursors. This binding prevents the formation of tetrahydrofolate, which is essential for cell division. The main side effects are myelosuppression and gastrointestinal toxicities, which can be reduced or prevented with appropriate doses (lowering dose) or discontinuation (in case of gastrointestinal toxicity).

Adenine sulphate is a nucleotide that is involved in the formation of DNA and RNA. Adenine sulphate is synthesized from adenosine triphosphate and sulfuric acid. It has been shown to be an important component of DNA polymerase, which is responsible for the production of RNA and DNA. Adenine sulphate also plays a role in the development of insect resistance in plants and tissue culture cells. Adenine sulphate levels have been found to be reduced in patients with orotic aciduria, a condition characterized by high levels of orotic acid in the urine. The decreased adenine sulfate levels are thought to be due to an imbalance between adenosine diphosphate, which inhibits adenylosuccinate lyase (ADSL), and sulfite oxidase (SOX) activity. ADSL converts adenosine diphosphate into adenosinethiol disulfide, while SOX converts sulfite into hydrogen sulfide

Cy5-DBCO, a NIR red dye with absorption at 646 nm and emission at 670 nm, is not ideal for staining permeabilized cells due to high background.

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1-Acetyluracil is a nucleophile molecule that contains the uracil residue. It is transferred to an organic molecule through the acetonitrile transfer reaction, which occurs in both animals and organisms. 1-Acetyluracil is found in ribosomes and possesses a functional group that can be modified by cellular enzymes. 1-Acetyluracil has been shown to be able to modify the peptidyl transferase activity of ribosomes in eukaryotes.

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7-(2-Hydroxypropyl)guanine (7-HPG) is a nucleoside analogue that is used for the treatment of liver cancer. It is an alkylating agent, which reacts with cellular DNA to form crosslinks and inhibits DNA synthesis. 7-HPG is given intravenously and targets liver cells, as well as other tissues such as the pancreas and lung. The short-term exposure of 7-HPG in animals has not been found to cause any carcinogenic effects. This drug also has a neutral pH, making it suitable for use in patients who have difficulty tolerating acidic drugs. The repair mechanism of 7-HPG may be due to the cell type specificity or short duration of exposure.

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1) Non-toxicity: belong to flower-stem dye, easy to biodegrade, no carcinogenic toxicity.

Pyrimidine nucleobase; allosteric regulator and coenzyme for reactions

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6-Phenyl-2-thiouracil (6PTU) is an alkylthio group that inhibits the growth of microorganisms by binding to DNA. 6PTU binds to the oxygen nucleophiles in DNA and prevents transcription and replication. It also has a positive effect on the synthesis of proteins, which may be due to its ability to regulate gene transcription. 6PTU has been shown to inhibit cell growth in culture by blocking protein synthesis. This drug is used as an analytical method for determining urinary glucose levels in animals because it reacts with glucose in urine samples. The reaction produces a chromatographic peak that can be quantified using an electrochemical detector.

DMTr-4'-F-U-CED-TBDMS phosphoramidite: a dye for oligonucleotide labeling, aids RNA research. Store in dark.

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9-(2-Chloro-6-Fluorobenzyl)-6-Dimethylaminopurine is a medicated feed additive that can be used in the screening, inoculation and dietary control of tenella. It is also an effective anticoccidial drug against coccidia and babesia. The drug has a wide dose range with an effective dose between 100 and 200 mg/kg body weight, which can be administered either intraperitoneally or orally. 9-(2-Chloro-6-Fluorobenzyl)-6-Dimethylaminopurine inhibits gametogenesis in both Plasmodium falciparum and Babesia bovis by inhibiting DNA synthesis. This drug also has antifilarial activity, which may be due to its ability to inhibit the synthesis of adenosine triphosphate (ATP) in the parasite's mitochondria.

Applications 6-Chloro-7-deazaguanine (cas# 84955-31-7) is a compound useful in organic synthesis.

5-Phospho-beta-D-arabinofuranosyl-1-(5-fluorouracil) (5FUA) is a synthetic compound used in chemotherapy. It is the first of a new type of anticancer agent that inhibits the synthesis of RNA and DNA. 5FUA has been shown to be effective against animal tumors, but it has not been tested for use in humans. 5FUA selectively inhibits the enzyme ribonucleotide reductase, which converts ribonucleotides into deoxyribonucleotides. The resulting lack of DNA prevents cell division and leads to cell death.

Nb-N-(benzhydryloxycarbonyl)cytosine)-1-acetic acid is a speciality chemical that is used as a reagent, building block, and scaffold for organic synthesis. This compound can be used in various reactions to produce complex compounds with high purity. Nb-N-(benzhydryloxycarbonyl)cytosine)-1-acetic acid is an excellent starting material for the production of fine chemicals, research chemicals, and versatile building blocks. It is also a useful intermediate for the production of pharmaceuticals and other useful compounds.

3-Benzyladenine is an alkylating agent that has been shown to inhibit the growth of certain bacteria. It has been used as a marker for epidemiological studies and in the production of monoclonal antibodies. 3-Benzyladenine binds to DNA by methylating the N7 position of guanine, which blocks DNA replication and transcription. 3-Benzyladenine also inhibits chloride transport in cells with a diet high in protein and prevents the growth of bacteria through hydrophobic interactions with cell membranes. The bactericidal activity of 3-benzyladenine can be increased by deuteration or base excision, which selectively destroys bacterial DNA.

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