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178603-05-9

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178603-05-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 178603-05-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,8,6,0 and 3 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 178603-05:
(8*1)+(7*7)+(6*8)+(5*6)+(4*0)+(3*3)+(2*0)+(1*5)=149
149 % 10 = 9
So 178603-05-9 is a valid CAS Registry Number.

178603-05-9Relevant articles and documents

Synthesis of homochiral 3-substituted cyclopentanones from 2-norbornanones

Martinez, A. Garcia,Teso Vilar,Garcia Fraile,De La Moya Cerero,Martinez Ruiz,Subramanian

, p. 2177 - 2180 (2007/10/03)

The cleavage of the C1-C2 bond in norbornate derivatives is accomplished by base-promoted hydrolysis of α-nitroketones, periodate oxidation or Beckmann fragmentation of suitable precursors prepared from the 2-norbornanones 1. These reactions are the basis for the synthesis of the 3-substituted homochiral cyclopentanones 6, 10 or 15.

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