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275356-25-7

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275356-25-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 275356-25-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,7,5,3,5 and 6 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 275356-25:
(8*2)+(7*7)+(6*5)+(5*3)+(4*5)+(3*6)+(2*2)+(1*5)=157
157 % 10 = 7
So 275356-25-7 is a valid CAS Registry Number.

275356-25-7Relevant articles and documents

Asymmetric intramolecular crossed-benzoin reactions by N-heterocyclic carbene catalysis

Enders, Dieter,Niemeier, Oliver,Balensiefer, Tim

, p. 1463 - 1467 (2006)

(Chemical Equation Presented) Getting cross: Excellent asymmetric inductions and very good yields are achieved in the generation of a quaternary stereocenter in α-hydroxy-substituted tetralones by using chiral N-heterocyclic carbene catalysts in an enantioselective intramolecular crossed-benzoin reaction. The synthesis of the corresponding α-hydroxyindanones with good ee values is also possible by this route.

Enantioselective synthesis of the pyrroloquinoline core of the martinellines

Nieman, James A.,Ennis, Michael D.

, p. 1395 - 1397 (2007/10/03)

(Matrix Presented) The first enantioselective synthesis of the martinelline core (-)-3 is reported. The synthesis of (-)-3 from N-allyl-N-(benzyloxycarbonyl)-2-iodoaniline (12) proceeded in seven steps and 23% overall yield. In addition, the preparation o

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