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855930-17-5

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855930-17-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 855930-17-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,5,9,3 and 0 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 855930-17:
(8*8)+(7*5)+(6*5)+(5*9)+(4*3)+(3*0)+(2*1)+(1*7)=195
195 % 10 = 5
So 855930-17-5 is a valid CAS Registry Number.

855930-17-5Relevant articles and documents

Industrial preparation method of 6-bromonaphthalene-1, 2-diamine

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, (2021/04/21)

The invention discloses an industrial preparation method of 6-bromonaphthalene-1, 2-diamine. The method comprises the following steps of: S1, making a compound III react with acetic anhydride in the presence of alkali and a catalyst to obtain a compound IV; S2, in the presence of acetic anhydride and nitric acid, taking acetic acid as a reaction solvent, performing reacting and purifying on the compound IV obtained in the step S1 to generate a compound V; S3, adding the compound V obtained in the above step into a solvent for dissolving the compound V, then adding a metal reducing agent and an ammonium chloride solution, heating to carry out a reaction for 6h, performing centrifugal filtering after finishing the reaction to obtain a filtrate, washing the filtrate with a sodium chloride solution, and performing concentrating to obtain a compound VI; and S4, adding the compound VI obtained in the previous step into a methanol solution, dropwise adding strong acid, replacing the solvent after finishing the reaction, performing crystallizing and filtering to obtain a compound 8. According to the method, the process is optimized, large-scale production can be achieved, applied materials are all commercial reagents, the cost is reduced, and the operation convenience is improved.

COMPOUNDS AS HEPATITIS C VIRUS INHIBITORS AND PHARMACEUTICAL USES THEREOF

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, (2016/09/26)

The invention provides compounds as hepatitis C virus inhibitors and pharmaceutical uses thereof. Specifically, the invention provides compounds of Formula (I) or a stereoisomer, a tautomer, an enantiomer, an N-oxide, a hydrate, a solvate, a metabolite, a

FUSED TRICYCLIC COMPOUNDS AND DERIVATIVES THEREOF USEFUL FOR THE TREATMENT OF VIRAL DISEASES

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, (2011/06/23)

The present invention relates to novel fused tricyclic compounds, compositions comprising at least one fused tricyclic compound, and methods of using fused tricyclic compounds for treating or preventing a viral infection or a virus-related disorder in a patient.

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