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134765-49-4

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134765-49-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 134765-49-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,7,6 and 5 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 134765-49:
(8*1)+(7*3)+(6*4)+(5*7)+(4*6)+(3*5)+(2*4)+(1*9)=144
144 % 10 = 4
So 134765-49-4 is a valid CAS Registry Number.

134765-49-4Downstream Products

134765-49-4Relevant articles and documents

LiBF4: A mild lewis acid for intramolecular diels-alder reactions

Smith, Douglas A.,Houk

, p. 1549 - 1552 (1991)

The lithium salts, LiClO4 and LiBF4, have been investigated for their potential use as Lewis acid catalysts in the intramolecular Diels-Alder reaction. No cycloaddition of the trienone, 1, is observed when LiClO4 is used. LiBF4 provides quantitative yield of the cis-fused cycloadduct in 72 hours at room temperature. The catalysis is ascribed to the slow release of BF3 rather than to the lithium cation.

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