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254745-24-9

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254745-24-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 254745-24-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,4,7,4 and 5 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 254745-24:
(8*2)+(7*5)+(6*4)+(5*7)+(4*4)+(3*5)+(2*2)+(1*4)=149
149 % 10 = 9
So 254745-24-9 is a valid CAS Registry Number.

254745-24-9Relevant articles and documents

Asymmetric addition of alkyllithium to chiral imines: α-Naphthylethyl group as a chiral auxiliary

Yamada, Hideki,Kawate, Tomohiko,Nishida, Atsushi,Nakagawa, Masako

, p. 8821 - 8828 (2007/10/03)

The diastereoselective nucleophilic addition of alkyllithium to N- alkylidene-α-naphthylethylamine was carried out. In the presence of Lewis acids or Lewis bases, organolithiums reacted smoothly with imines to give the corresponding amines in high stereoselectivity (up to 100% de). Furthermore, the resulting optically active amines were found to be useful for asymmetric reactions as chiral ligands.

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