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1442111-91-2

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1442111-91-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1442111-91-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,4,2,1,1 and 1 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1442111-91:
(9*1)+(8*4)+(7*4)+(6*2)+(5*1)+(4*1)+(3*1)+(2*9)+(1*1)=112
112 % 10 = 2
So 1442111-91-2 is a valid CAS Registry Number.

1442111-91-2Relevant academic research and scientific papers

Tandem br?nsted acid promoted and nazarov carbocyclizations of enyne acetals to hydroazulenones

Escalante, Luz,González-Rodríguez, Carlos,Varela, Jesús A.,Saá, Carlos

, p. 12316 - 12320 (2013/02/25)

Ring the changes: Enyne acetals were easily converted into hydroazulene skeletons by a new and efficient metal-free route involving a Br?nsted acid promoted carbocyclization and a subsequent stereospecific Nazarov cyclization (see scheme). The versatility of this transformation also allowed assembly of interesting heteroaromatic tricyclic systems. Copyright

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