Guanine

• Molecular Formula:C5H5N5O
• Molecular Weight:151.128
• Appearance/Colour:white to light yellow crystal powder 
• Vapor Pressure:5.86E-14mmHg at 25°C 
• Melting Point:>300 °C(lit.) 
• Refractive Index:2.047 
• Boiling Point:591.4oC at 760 mmHg 
• PKA:9.92(at 40℃) 
• Flash Point:311.4oC 
• PSA：100.45000 
• Density:2.196 g/cm³ 
• LogP:-0.19040 

Guanine (G) is one of the four nucleotide bases in DNA, along with adenine (A), cytosine (C), and thymine (T), and it pairs with cytosine in the DNA double helix. As a nitrogenous base, guanine belongs to the purine group, characterized by a two-ringed structure composed of carbon and nitrogen atoms. Found in both DNA and RNA, guanine-containing nucleotides play roles in powering chemical reactions and cellular signaling. It can be derived from natural sources like guano and sugar beets and can be hydrolyzed into glycine, ammonia, carbon dioxide, and carbon monoxide. Guanine undergoes deamination to form xanthine and oxidizes more readily than adenine. Its photochemical properties have been studied using advanced quantum chemistry methods, revealing insights into its ultrafast fluorescence decay and photostability. Shanghai Wibson Biotechnology Co., Ltd. is a high-tech enterprise that mainly develops and sells pharmaceutical and chemical raw materials and other related products. The company has advanced and perfect supporting system and has formed advanced chemical synthesis technology, which can quickly meet the personalized needs and series development from suitable testing to industrial production. Products are exported to Russia, Southeast Asia and other countries, in the world has a very high reputation and visibility. The company has strong financial strength and a good operating environment, can provide customers with high-quality, efficient and fast services.