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1240041-19-3

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1240041-19-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1240041-19-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,4,0,0,4 and 1 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1240041-19:
(9*1)+(8*2)+(7*4)+(6*0)+(5*0)+(4*4)+(3*1)+(2*1)+(1*9)=83
83 % 10 = 3
So 1240041-19-3 is a valid CAS Registry Number.

1240041-19-3Downstream Products

1240041-19-3Relevant articles and documents

Orthogonal regioselective synthesis of N-alkyl-3-substituted tetrahydroindazolones

Kim, Jonghoon,Song, Heebum,Park, Seung Bum

supporting information; experimental part, p. 3815 - 3822 (2010/09/10)

A divergent strategy for the regioselective and orthogonal synthesis of complementary regioisomers of N-alkyl-3-substituted-tetrahydroindazolones 3 and 4 was achieved from. Boc-protected alkylhydrazmes 1. The robustness and sub-strate generality of this method were validated by synthesizing 3 and. 4 through the intra- and intermolecular condensation of 1 with various 2-acylcyclohexane-l,3-diones 2 and aldehydes, respectively.

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