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98634-90-3

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98634-90-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 98634-90-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,8,6,3 and 4 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 98634-90:
(7*9)+(6*8)+(5*6)+(4*3)+(3*4)+(2*9)+(1*0)=183
183 % 10 = 3
So 98634-90-3 is a valid CAS Registry Number.

98634-90-3Relevant articles and documents

3,4-O-Diacetylisoproterenol. Preparation, Structure Proof, and β-Receptor Effect

Jakobsen, Palle,Treppendahl, Svend,Andersen, Peter H.,Klysner, Rene,Geisler, Arne,Teuber, Lene

, p. 1962 - 1964 (1985)

Direct acetylation of isoproterenol by selective O-acetylation using CH3COCl/CF3COOH was shown to lead to the formation of 2-(3,4-diacetoxyphenyl)-2-chloro-N-isopropyl-1-ethanamine and not to 3,4-O-diacetylisoproterenol.The latter was prepared by reductio

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