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137420-59-8

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137420-59-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137420-59-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,4,2 and 0 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 137420-59:
(8*1)+(7*3)+(6*7)+(5*4)+(4*2)+(3*0)+(2*5)+(1*9)=118
118 % 10 = 8
So 137420-59-8 is a valid CAS Registry Number.

137420-59-8Relevant articles and documents

HCV PROTEASE INHIBITORS

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Paragraph 0141; 0142; 0174; 0175, (2014/06/24)

The present invention discloses a compound of general formula (I); A is O, S, CH, NH or NR', when O links with Z3, Z1 is N or CRZ1, Z2 is CRZ2, when Z1 links with O, Z2 is CH, Z3 is C-Ar; Ra, Rb, Rc and Rd independently is H, OH, halogen or -Y1-Rm; A1 is NH or CH2; R1' is alkyl, aryl, cycloalkyl, heterocycloalkyl or heteroaryl; A2 is N, O or linking bond; R1 is hydrogen, or, R1 linking covalently with R3 forms C5-C9 saturated or unsaturated hydrocarbon chain substituted by O or N; R3 is alkyl, cycloalkyl, heterocycloalkyl, alkyl substituted by cycloalky etc; R4 is alkoxy-CO, alkyl-NHCO, (alkyl)2NCO, or formyl substituted by aryl, cycloalkyl, heterocycloalkyl.

HCV Protease Inhibitors

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Paragraph 02776-0278, (2014/06/24)

A compound of general formula (I); A is O, S, CH, NH or NR′, when O links with Z3, Z1 is N or CRZ1, Z2 is CRZ2, when Z1 links with O, Z2 is CH, Z3 is C—Ar; Ra, Rb, Rc and Rd independently is H, OH, halogen or —Y1—Rm; A1 is NH or CH2; R1′ is alkyl, aryl, cycloalkyl, heterocycloalkyl or heteroaryl; A2 is N, O or linking bond; R1 is hydrogen, or, R1 linking covalently with R3 forms C5-C9 saturated or unsaturated hydrocarbon chain substituted by O or N; R3 is alkyl, cycloalkyl, heterocycloalkyl, alkyl substituted by cycloalkyl etc; R4 is alkoxy-CO, alkyl-NHCO, (alkyl)2NCO, or formyl substituted by aryl, cycloalkyl, heterocycloalkyl.

An expedient synthesis of poly-substituted 1-arylisoquinolines from δ-ketonitriles via indium-mediated Barbier reaction protocol

Kim, Sung Hwan,Lee, Hyun Seung,Kim, Ko Hoon,Kim, Jae Nyoung

experimental part, p. 6476 - 6479 (2011/02/23)

We developed an efficient synthetic strategy of poly-substituted 1-arylisoquinolines via an indium-mediated Barbier type allylation from δ-ketonitriles. Initial attack of allylindium species occurred at the nitrile group selectively to form the enamine intermediate, which reacted with the ketone group intramolecularly to furnish the isoquinolines.

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