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898557-53-4

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898557-53-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 898557-53-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,9,8,5,5 and 7 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 898557-53:
(8*8)+(7*9)+(6*8)+(5*5)+(4*5)+(3*7)+(2*5)+(1*3)=254
254 % 10 = 4
So 898557-53-4 is a valid CAS Registry Number.

898557-53-4Downstream Products

898557-53-4Relevant academic research and scientific papers

1,5,6,-Substituted-2-Oxo-3-Cyano-1,6a-Diaza-Tetrahydro-Fluoranthenes as Anti-Infective Agents

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Page/Page column 14, (2008/12/06)

HIV inhibitory compounds of formula: salts and stereoisomers thereof, wherein R1 and R2 are hydrogen or optionally substituted C1-10alkyl; R3 is n is 1, 2 or 3; R3a is nitro, cyano, amino, halo, hydroxy, C1-4alkyloxy, hydroxycarbonyl, aminocarbonyl, CI 4alkyloxycarbonyl, mono- or di(C1-4alkyl)aminocarbonyl, C1-4alkylcarbonyl, methanimidamidyl, mono- or di(C1-4alkyl)methanimidamidyl, N-hydroxy-methanimidamidyl or Het; or R3 is a monocyclic or bicyclic aromatic heterocyclic ring system, wherein one, two, three or four ring members are nitrogen, oxygen and sulfur, and wherein the remaining ring members are carbon atoms; and wherein each of said heterocyclic ring systems may optionally be substituted; X is —NR7—, —0— or —S—; pharmaceutical compositions containing these compounds, methods for preparing these compounds and compositions.

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