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1240194-91-5

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1240194-91-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1240194-91-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,4,0,1,9 and 4 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1240194-91:
(9*1)+(8*2)+(7*4)+(6*0)+(5*1)+(4*9)+(3*4)+(2*9)+(1*1)=125
125 % 10 = 5
So 1240194-91-5 is a valid CAS Registry Number.

1240194-91-5Downstream Products

1240194-91-5Relevant articles and documents

Synthesis of indolequinones from bromoquinones and enamines mediated by Cu(OAc)2H2O

Inman, Martyn,Moody, Christopher J.

supporting information; experimental part, p. 6023 - 6026 (2010/11/20)

A Cu(II)-mediated synthesis of indolequinones from the corresponding bromoquinones and enamines is reported. The key oxidative cyclization proceeds in good yield for a broad range of substrates and can be performed on a multigram scale, allowing access to biologically interesting structures.

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