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693245-43-1

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693245-43-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 693245-43-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,9,3,2,4 and 5 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 693245-43:
(8*6)+(7*9)+(6*3)+(5*2)+(4*4)+(3*5)+(2*4)+(1*3)=181
181 % 10 = 1
So 693245-43-1 is a valid CAS Registry Number.

693245-43-1Relevant articles and documents

Convenient synthesis of (+)-valiolamine and (-)-1-epi-valiolamine from (-)-vibo-quercitol

Ogawa, Seiichiro,Ohishi, Yo,Asada, Miwako,Tomoda, Akihiro,Takahashi, Atsushi,Ooki, Yoriko,Mori, Midori,Itoh, Masayoshi,Korenaga, Takashi

, p. 884 - 889 (2007/10/03)

The synthesis of (+)-valiolamine and (-)-1-epi-valiolamine using bioconversion of (-)-vibo-quercitol was investigated. The quercitols were separated and purified by combination of chromatography on ion-exchange-resin columns and recrystallization. Valiolamine was isolated from fermentation broth of antibiotic validamycins. The obtained crude ketone was subjected to C-C bond formation conditions in which diazomethane was considered adequate in polar and protic solvsnts.

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