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384823-61-4

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384823-61-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 384823-61-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,8,4,8,2 and 3 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 384823-61:
(8*3)+(7*8)+(6*4)+(5*8)+(4*2)+(3*3)+(2*6)+(1*1)=174
174 % 10 = 4
So 384823-61-4 is a valid CAS Registry Number.

384823-61-4Downstream Products

384823-61-4Relevant articles and documents

Regioselective Mannich reaction of phenolic compounds and its application to the synthesis of new chitosan derivatives

Omura, Yoshihiko,Taruno, Yoshitaka,Irisa, Yasuhiro,Morimoto, Minoru,Saimoto, Hiroyuki,Shigemasa, Yoshihiro

, p. 7273 - 7275 (2001)

A regioselective aminomethylation of 2,4-dihydroxybenzoyl compounds at the C(3) position was accomplished through a Mannich reaction of phenolic substrates with formaldehyde and secondary amines in methanol, whereas the reaction with primary amines included a subsequent cyclization step to yield the 1,3-benzoxazine derivatives. This sequence was successfully applied to the one-pot introduction of N-benzyl side chains to chitosan, a natural polyaminosaccharide, to afford a new chitosan derivative with improved solubility in an organic solvent.

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