1123744-18-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1123744-18-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,2,3,7,4 and 4 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1123744-18:
(9*1)+(8*1)+(7*2)+(6*3)+(5*7)+(4*4)+(3*4)+(2*1)+(1*8)=122
122 % 10 = 2
So 1123744-18-2 is a valid CAS Registry Number.
1123744-18-2Relevant articles and documents
3-Pyrrolidinones: Michael addition and Schmidt rearrangement reactions
Amer,Hammouda,El-Ahl,Abdel-Wahab
experimental part, p. 416 - 425 (2009/05/30)
Various spiro-pyrano[3,2-b]pyrrolo-2-oxoindolines 3a-d and dicyano-pyrano[3,2-b]pyrroles 5a-e have been synthesized in the present study by Michael addition of 3-pyrrolidinones 1 to isatin-3-ylidenes 2 and arylidenemalononitrile 4. Hexahydro-4-oxo-1-aryl-