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75677-03-1

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75677-03-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 75677-03-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,6,7 and 7 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 75677-03:
(7*7)+(6*5)+(5*6)+(4*7)+(3*7)+(2*0)+(1*3)=161
161 % 10 = 1
So 75677-03-1 is a valid CAS Registry Number.

75677-03-1Relevant articles and documents

Enantioselective synthesis of functionalized 1-benzoxepines by phenoxide ion mediated 7-endo-tet carbocyclization of cyclic sulfates

Das, Sajal Kumar,Dinda, Subal Kumar,Panda, Gautam

supporting information; experimental part, p. 204 - 207 (2009/06/21)

A new asymmetric synthesis of 2,3-disubstituted 1-benzoxepines is described. Key steps include Sharpless asymmetric dihydroxylation of trans-α,β-unsaturated esters and phenoxide ion mediated intramolecular 7-endo-tet carbocyclization of syn-2,3-dihydroxy ester derived cyclic sulfates. Wiley-VCH Verlag GmbH & Co. KGaA, 2009.

β-Hydroxy-α-tosyloxy esters as chiral building blocks for the enantioselective synthesis of benzo-annulated oxa-heterocycles: scope and limitations

Das, Sajal Kumar,Panda, Gautam

, p. 4162 - 4173 (2008/09/19)

The enantioselective synthesis of benzo-annulated oxa-heterocycles 2,3-dihydrobenzofuran and 1-benzopyran derivatives is described using β-hydroxy-α-tosyloxy esters as chiral building blocks, which are easily accessible through the regioselective α-tosyla

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