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694520-57-5

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694520-57-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 694520-57-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,9,4,5,2 and 0 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 694520-57:
(8*6)+(7*9)+(6*4)+(5*5)+(4*2)+(3*0)+(2*5)+(1*7)=185
185 % 10 = 5
So 694520-57-5 is a valid CAS Registry Number.

694520-57-5Relevant articles and documents

Highly Diastereoselective Synthesis of trans-2,5-Disubstituted Tetrahydrofurans

Jalce, Gael,Seck, Matar,Franck, Xavier,Hocquemiller, Reynald,Figadere, Bruno

, p. 3240 - 3241 (2007/10/03)

trans-2,5-Disubstituted tetrahydrofurans were obtained as major diastereomers (trans / cis ratio 90:10-100: 0) when acetylated y-lactols derived from (S)-glutamic acid were treated with titanium enolates of N-acetyl (R)-oxazolidin-2-thiones. A simple tran

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