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1242079-59-9

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1242079-59-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1242079-59-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,4,2,0,7 and 9 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1242079-59:
(9*1)+(8*2)+(7*4)+(6*2)+(5*0)+(4*7)+(3*9)+(2*5)+(1*9)=139
139 % 10 = 9
So 1242079-59-9 is a valid CAS Registry Number.

1242079-59-9Downstream Products

1242079-59-9Relevant articles and documents

Synthesis of the isoquinocycline-pyrrolopyrrole substructure

Cordes, Jens,Harms, Klaus,Koert, Ulrich

, p. 3808 - 3811 (2010)

The synthesis of the pyrrolopyrrole substructure of the isoquinocyclines is reported. The pentacyclic (CDEFG) substructure of isoquinocycline A and B, which contains an unusual 2,4,5,6-tetrahydropyrrolo[2,3-b]pyrrole (FG) connected via an N,O-spiro acetal to the anthraquinoid core of the isoquinocycline aglycon has been synthesized. Key steps were a nickel(0)-mediated hydrocyanation of an alkynone, the conversion of an O,O-acetal into an N,O-acetal, and an intramolecular amidine alkylation.

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