Chemistry is traditionally divided into organic and inorganic chemistry. SDS of cas: 87392-05-0, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 87392-05-0
The present invention, the antiviral pharmaceutical composition containing a compound of the following action. P represents a hydrogen atom or a group forming a prodrug; A1 The, CR1A R1B , O or S; A2 The, CR2A R2B , O or S; A3 The, CR3A R3B , O or S; A4 Is, independently CR4A R4B , O or S; Here, A1 , A2 , A3 , A4 , A1 The nitrogen atom is adjacent to, and A4 The number of carbon atoms constituting the ring atoms of the heteroatom of the ring from the adjacent, 1 or 2 to 2; R1A And R1B Is, independently, hydrogen, halogen, or alkyl or the like; R2A And R2B Is, independently, hydrogen, halogen, or alkyl or the like; R3A And R3B Is, independently, hydrogen, halogen, or alkyl or the like; R4A And R4B Is, independently, hydrogen, halogen, or alkyl or the like; R3A And R3B The non-aromatic carbon ring or a non-aromatic heterocyclic ring together may form; R1 A fluorine atom; M is an integer of 1 – 2 N is an integer of 1 – 2) [Drawing] no (by machine translation)
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Reference：
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem