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142506-91-0

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142506-91-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 142506-91-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,5,0 and 6 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 142506-91:
(8*1)+(7*4)+(6*2)+(5*5)+(4*0)+(3*6)+(2*9)+(1*1)=110
110 % 10 = 0
So 142506-91-0 is a valid CAS Registry Number.

142506-91-0Relevant articles and documents

Enantioselective diels-alder reactions with anomalous endo/exo selectivities using conformationally flexible chiral supramolecular catalysts

Hatano, Manabu,Mizuno, Tomokazu,Izumiseki, Atsuto,Usami, Ryota,Asai, Takafumi,Akakura, Matsujiro,Ishihara, Kazuaki

scheme or table, p. 12189 - 12192 (2012/02/01)

Swapped selectivities: The use of tailor-made catalysts results in anomalous endo/exo selectivities and high enantioselectivities in the Diels-Alder reactions of cyclopentadiene with different acroleins (see scheme). These supramolecular catalysts are prepared in situ from chiral diols, arylboronic acid, and tris(pentafluorophenyl)borane, and can discriminate the re/si face of the dienophile as well as the endo/exo approach of the diene.

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