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18439-27-5

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18439-27-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 18439-27-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,4,3 and 9 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 18439-27:
(7*1)+(6*8)+(5*4)+(4*3)+(3*9)+(2*2)+(1*7)=125
125 % 10 = 5
So 18439-27-5 is a valid CAS Registry Number.

18439-27-5Upstream product

18439-27-5Downstream Products

18439-27-5Relevant articles and documents

4-Isopropyl-2-oxazolin-5-one anion as a new convenient formyl anion equivalent for conjugate addition and aldol reactions

Barco, Achille,Benetti, Simonetta,De Risi, Carmela,Pollini, Gian P.,Spalluto, Giampiero,Zanirato, Vinicio

, p. 3907 - 3910 (2007/10/02)

The anion of the title compound, simply generated in the presence of catalytic amount of triethylamine, acts as nucleophilic acylating equivalent of formaldehyde reacting with both common electrophilic olefins or aldehydes to give moderate to good yield of Michael or aldol adducts respectively, which are easily hydrolized by dilute acid at ambient to temperature to afford the corresponding aldehydes.

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