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131423-66-0

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131423-66-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 131423-66-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,4,2 and 3 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 131423-66:
(8*1)+(7*3)+(6*1)+(5*4)+(4*2)+(3*3)+(2*6)+(1*6)=90
90 % 10 = 0
So 131423-66-0 is a valid CAS Registry Number.

131423-66-0Downstream Products

131423-66-0Relevant articles and documents

A Regio- and stereocontrolled total synthesis of (-)-indolactam-V

Kogan, Timothy P.,Somers, Todd C.,Venuti, Michael C.

, p. 6623 - 6632 (1990)

(-)-Indolactam-V (IL-V) (1)-was prepared in 10 steps from L-tryptophan methyl ester in 17.1% overall yield. The key steps involve regiospecific thallation of the acylindole intermediate (4), followed by azide displacement and reduction to introduce the 13-amino group. Control of the C-11 stereocenter was achieved by SN2 displacement of the chiral inflate (10), derived from D-valine. The thallium mediated closure of dipeptide (17) did not provide an alternative route to IL-V.

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