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671798-21-3

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671798-21-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 671798-21-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,7,1,7,9 and 8 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 671798-21:
(8*6)+(7*7)+(6*1)+(5*7)+(4*9)+(3*8)+(2*2)+(1*1)=203
203 % 10 = 3
So 671798-21-3 is a valid CAS Registry Number.

671798-21-3Relevant articles and documents

Stereoselective total synthesis of Oxylipins: (6S,7E,9R,10S)-6,9,10- trihydroxyoctadec-7-enoic acid and (6z,8r,9r,10s)-8,9,10-trihydroxyoctadec-6- enoic acid

Singh Yadav, Jhillu,Shiva Shankar, Kattela,Srinivas Reddy, Anugu,Subba Reddy, Basi V.

, p. 546 - 555 (2014/05/06)

The stereoselective total syntheses of oxylipins 1b and 1c are described starting from readily accessible natural sugars via the Grubbs cross-metathesis, Wittig olefination, and Zn-mediated reductive elimination as key steps. Copyright

Synthesis of fused bicyclic glutarimides

Chang, Meng-Yang,Chen, Chung-Yi,Chen, Shui-Tein,Chang, Nein-Chen

, p. 7547 - 7553 (2007/10/03)

We describe an efficient route towards the synthesis of fused bicyclic glutarimides using facile [3+3] reaction of α-sulfonylacetamides with different α,β-unsaturated esters as the key step. Intramolecular cyclization of 4-substituted 3-sulfonylglutarimide to form 5,6-, 6,6- or 6,7-fused bicyclic glutarimides was accomplished via alkylation, oxidative cyclization or ring-closing metathesis in modest yield.

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