N4-ACETYLCYTIDINE

N4-ACETYLCYTIDINE
PRODUCT IDENTIFICATION
CAS NO.	3768-18-1
EINECS NO.	223-195-6
FORMULA	C₁₁H₁₅N₃O₆
MOL WT.	285.26
H.S. CODE
TOXICITY
SYNONYMS	N4-Acetyl Cytosine Riboside; ac4C;
4-Acetyl-1-(.beta.-D-ribofuranosyl)cytosine; 4-Acetil-1-(á-D-ribofuranosil) citosina; 4-Acétyl-1-(.beta.-D-ribofuranosyl)cytosine;
CLASSIFICATION
PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE	white to off-white crystalline powder
MELTING POINT	199 C (Decomposes)
BOILING POINT
SPECIFIC GRAVITY
SOLUBILITY IN WATER
pH
VAPOR DENSITY
AUTOIGNITION
NFPA RATINGS
REFRACTIVE INDEX
FLASH POINT
STABILITY	Stable under ordinary conditions.
GENERAL DESCRIPTION & APPLICATIONS
Ribose is a pentose (five-carbon sugar) that is a component of the ribonucleic acid (RNA), where it alternates with phosphate groups to form the 'back-bone' of the RNA polymer and binds to nitrogenous bases. Ribose phosphates are components of the nucleotide coenzymes and are utilized by microorganisms in the synthesis of the amino acid histidine. Its close relative, deoxyribose, is a constituent of deoxyribonucleic acid (DNA), where it alternates with phosphate groups to form the 'back-bone' of the DNA polymer and binds to nitrogenous bases. The presence of deoxyribose instead of ribose is one difference between DNA and RNA. Ribose has one more oxygen atom in its molecule than deoxyribose. Ribose has a five member ring composed of four carbon atoms and one oxygen. Hydroxyl groups are attached to three of the carbons. The other carbon and a hydroxyl group are attached to one of the carbon atoms adjacent to the oxygen. In deoxyribose, the carbon furthest from the attached carbon is stripped of the oxygen atom in what would be a hydroxyl group in ribose. The sugar (ribose or deoxyribose) molecules in the nucleic acid are all oriented in the same direction. Their carbon atoms are numbered: the 5' carbon atom is always on the side of the sugar molecule that faces the leading end, while the 3' carbon atom always faces the tail end. Nucleotide is the structural unit of a nucleic acid. A nucleotide consists of either a nitrogenous heterocyclic base (purine or pyrimidine) , a pentose sugar (ribose or deoxyribose) and a phosphate group attached at the 5' position on the sugar. A nucleoside consists of only a pentose sugar linked to a purine or pyrimidine base, without a phosphate group. Purine bases are Adenine, Guanine and Hypoxanthine (examples of purine nucleosides are Adenosine, 2'-Deoxyadenosine, Guanosine, 2'-Deoxyguanosine, Inosine, 2'-Deoxyinosine). Pyrimidine bases are Cytosine, Thymine, and Uracil (examples of pyrimidine nucleosides are Cytidine, 2'-Deoxyguanosine, 5-Methyluridine, 2'-Deoxy-5-Methyluridine, Uridine, 2'-Deoxyuridine). The nucleoside derivatives are involved in important functions in cellular metabolism and are used to synthesize enzyme inhibitors, antiviral agents, and anticancer agents. Cytosine is a pyrimidine base, occurring condensed with ribose or deoxyribose to form the nucleosides cytidine and deoxycytidine in animal cells. It is a fundamental unit or base of nucleic acids. When N9 is linked to the C1 of ribose, cytosine forms a pyrimidine nucleoside called cytidines which are phosphorylated with from one to three phosphoric acid groups to form the three nucleotides; cytidine monophosphate (CMP), cytidine diphosphate (CDP), and cytidine triphosphate (CTP) respectively. When N1 is linked to the C1 of deoxyribose, deoxy nucleosides and nucleotides are formed from cytosine and deoxyribose; deoxycytidine monophosphate (dCMP), deoxycytidine diphosphate (dCDP), deoxycytidine triphosphate (dCTP). CTP is the source of the cytidine in RNA (ribonucleic acid) and deoxycytidine triphosphate (dCTP) is the source of the deoxycytidine in DNA (deoxyribonucleic acid). CTP is involved in the formation of adenosine triphosphate (ATP) as a donator of phosphate groups to adenosine diphosphate (ADP). Cytidine Monophosphate (CMP, Cytidylic Acid; ): a nucleotide, the 5'-phosphate of cytidine, acting as a carrier of N-acetylneuraminic acid in glycoprotein synthesis. Cytidine Diphosphate (CDP): a nucleotide, the 5'-pyrophosphate of cytidine, acting as a carrier of choline and ethanolamine in the phospholipid synthesis. Cytidine Triphosphate (CTP): a nucleotide, the 5'-triphosphate of cytidine; precursor in the synthesis of ribonucleic acid and of CDP- and CMP-linked compounds. Deoxycytidine Monophosphate (dCMP): a nucleotide, the 5'-phosphate of deoxycytidine (deoxy-, also called desoxy, is a prefix for the designation of compounds which contain one less atom of oxygen than the reference substance). Deoxycytidine Diphosphate (dCDP): a nucleotide, the 5'-pyrophosphate of deoxycytidine. Deoxycytidine Triphosphate (dCTP): a nucleotide, the 5'-triphosphate of deoxycytidine; an precursor in the synthesis of DNA. Chemically modified nucleotides substituted or attached by special chemical groups or elements are studied and used to inactivate the normal biological operation in the living organism and the function of important enzymes.
SALES SPECIFICATION
APPEARANCE	white to off-white crystalline powder
ASSAY	98.0% min
MELTING POINT	199 - 201 C
HEAVY METALS	20ppm max
TRANSPORTATION
PACKING	20kgs in fiber drum
HAZARD CLASS
UN NO.
OTHER INFORMATION
`Hazard Symbols: n/a, Risk Phrases:` 42/43`, Safety Phrases:`22-24/25 Price: