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15330-39-9

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15330-39-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 15330-39-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,5,3,3 and 0 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 15330-39:
(7*1)+(6*5)+(5*3)+(4*3)+(3*0)+(2*3)+(1*9)=79
79 % 10 = 9
So 15330-39-9 is a valid CAS Registry Number.

15330-39-9Relevant articles and documents

Base-Catalyzed Alkylation of 2-Naphthol with Glyoxal

Kito, Taketoshi,Yoshinaga, Kohji,Yamaya, Makoto,Mizobe, Hoyou

, p. 3336 - 3339 (1991)

Alkylation of potassium 2-naphthyl oxide with glyoxal in aqueous media formed 1,2-dihydronaphthofuran-1,2-diol (1).Without isolation of 1, acidification of this reaction mixture with aqueous HCl led to three products, i.e., the lactone of (2-hydroxy-1-naphthyl)acetic acid (2), the hemiacetal of bis(2-hydroxy-1-naphthyl)acetaldehyde (3), and the corresponding acetal (4).Mutual interconversions of 1 and these three products revealed the reaction pathway and the mechanisms of formation of the lactone and the acetal.

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