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223704-18-5

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223704-18-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 223704-18-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,3,7,0 and 4 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 223704-18:
(8*2)+(7*2)+(6*3)+(5*7)+(4*0)+(3*4)+(2*1)+(1*8)=105
105 % 10 = 5
So 223704-18-5 is a valid CAS Registry Number.

223704-18-5Downstream Products

223704-18-5Relevant articles and documents

Conformationally biased selective alkylation of trans-cyclohexane-1,2- bis(sulfonamide) assisted by solvent-tuned protecting groups: Applications to the synthesis of a large optically active polyazamacrocycle

Pena, Carmen,Alfonso, Ignacio,Gotor, Vicente

, p. 3887 - 3897 (2007/10/03)

The selective alkylation of (R,R)-cyclohexane-1,2-bis(sulfonamide) with trityl bromoalkyl ethers has been studied in detail. The major formation of either mono- or dialkylated compounds clearly depends on the right combination of protecting groups and the

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