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83021-09-4

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83021-09-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 83021-09-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,0,2 and 1 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 83021-09:
(7*8)+(6*3)+(5*0)+(4*2)+(3*1)+(2*0)+(1*9)=94
94 % 10 = 4
So 83021-09-4 is a valid CAS Registry Number.

83021-09-4Relevant articles and documents

Versatile amine-promoted mild methanolysis of 3,5-dinitrobenzoates and its application to the synthesis of Colorado potato beetle pheromone

Yamano, Yumiko,Sasaki, Haruna,Wada, Akimori

, p. 940 - 944 (2018/10/31)

A mild deacylation method for 3,5-dinitrobenzoates using methanolic solutions of amines, such as dialkylamines, was developed. The method’s versatility was confirmed by applying it to synthesizing a key intermediate for Colorado potato beetle pheromone.

Synthesis of the 4-Alkylidenebutenolide Carotenoids, Peridinin and Pyrrhoxanthin

Masayoshi, Ito,Hirata, Yumiko,Shibata, Yuko,Tsukida, Kiyoshi

, p. 197 - 199 (2007/10/02)

A novel synthetic method of carotenoidal alkylidenebutenolides has been developed, and applied to the first synthesis of peridinin (1) and pyrrhoxanthin (2).

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