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208938-45-8

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208938-45-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 208938-45-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,8,9,3 and 8 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 208938-45:
(8*2)+(7*0)+(6*8)+(5*9)+(4*3)+(3*8)+(2*4)+(1*5)=158
158 % 10 = 8
So 208938-45-8 is a valid CAS Registry Number.

208938-45-8Relevant articles and documents

Asymmetric synthesis of α,α-disubstituted α-amino acide derivatives using MABR promoted rearrangement

Matsushita, Masayuki,Maeda, Hana,Kodama, Mitsuaki

, p. 3749 - 3752 (2007/10/03)

An efficient route for the asymmetric synthesis of α,α-disubstituted α-amino acids derivatives (1, 2, and 3) starting from readily available epoxy silyl ethers (6) has been developed. High enantiomeric purity can be realized by the present method using a combination of MABR rearrangement of a chiral epoxide and Curtius rearrangement.

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