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59776-74-8

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59776-74-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 59776-74-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,9,7,7 and 6 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 59776-74:
(7*5)+(6*9)+(5*7)+(4*7)+(3*6)+(2*7)+(1*4)=188
188 % 10 = 8
So 59776-74-8 is a valid CAS Registry Number.

59776-74-8Downstream Products

59776-74-8Relevant articles and documents

Direct Synthesis of 5-Acyl-3-oxy-4-pyrones Based on Acid-?-Catalyzed Acylation of Enaminodiones with Acylbenzotriazoles via Soft Enolization

Chernyshova, Elena V.,Obydennov, Dmitrii L.,Shirinkin, Alexander S.,Sosnovskikh, Vyacheslav Y.,Usachev, Sergey A.,Viktorova, Viktoria V.

, p. 2267 - 2276 (2020)

A novel convenient acid-catalyzed acylation of enaminodiones with acylbenzotriazoles via soft enolization has been developed for the direct synthesis of hard-to-reach 5-acyl-3-oxy-4-pyrones. The important advantages of the reaction include broad substrate scope, mild conditions, scalability, and readily isolation of products by crystallization without the use of chromatography. Further modification of the pyrone ring and synthesis of various azaheterocycles via ring-opening transformation have been demonstrated for the preparation of potential scaffolds for inhibition of metalloenzymes.

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