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253304-53-9

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253304-53-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 253304-53-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,3,3,0 and 4 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 253304-53:
(8*2)+(7*5)+(6*3)+(5*3)+(4*0)+(3*4)+(2*5)+(1*3)=109
109 % 10 = 9
So 253304-53-9 is a valid CAS Registry Number.

253304-53-9Relevant articles and documents

Catalytic asymmetric synthesis of axially chiral o-iodoanilides by phase-transfer catalyzed alkylations

Shirakawa, Seiji,Liu, Kun,Maruoka, Keiji

, p. 916 - 919 (2012)

Catalytic asymmetric synthesis of axially chiral o-iodoacrylanilides and N-allyl-o-iodoanilides as useful chiral building blocks was achieved via chiral quaternary ammonium salt-catalyzed N-alkylations under phase-transfer conditions. The transition-state structure for the present reaction is discussed on the basis of the X-ray crystal structure of ammonium anilide.

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