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(1R,3S,4R,5R)-3-<(1S,3E)-1-(benzyloxy)-4-(ethoxycarbonyl)-3-butenyl>-4-(2-oxopropyl)-7,7-dimethyl-2,6,8-trioxabicyclo<3.3.0>octane is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

142133-20-8

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142133-20-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 142133-20-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,1,3 and 3 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 142133-20:
(8*1)+(7*4)+(6*2)+(5*1)+(4*3)+(3*3)+(2*2)+(1*0)=78
78 % 10 = 8
So 142133-20-8 is a valid CAS Registry Number.

142133-20-8Relevant academic research and scientific papers

Tandem Intramolecular Michael Addition/Aldol Condensation or Acylation Applied to D-Glucose-Derived Substrates: Preparation of Enantiomeric Octahydronaphthalenone Derivatives Equipped with C- and O-Functionalities

Tadano, Kin-ichi,Nagashima, Kensuke,Ueno, Yoshihide,Ogawa, Seiichiro

, p. 4496 - 4506 (2007/10/02)

An enantiomerically pure (1,2-isopropylidenedioxy)tetrahydrofuran derivative, 9, bearing acetonyl and propionaldehyde side chains smoothly underwent aldol cyclization under basic conditions.The major product was the cis-aldol 21S, accompanied by the trans

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