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1246659-58-4

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1246659-58-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1246659-58-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,4,6,6,5 and 9 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1246659-58:
(9*1)+(8*2)+(7*4)+(6*6)+(5*6)+(4*5)+(3*9)+(2*5)+(1*8)=184
184 % 10 = 4
So 1246659-58-4 is a valid CAS Registry Number.

1246659-58-4Relevant articles and documents

Intra- And intermolecular oxa-pictet-spengler cyclization strategy for the enantioselective synthesis of deoxy analogues of (+)-nanomycin A methyl ester, (+)-eleutherin, (+)-allo-eleutherin, and (+)-thysanone

Sawant, Rajiv T.,Jadhav, Satish G.,Waghmode, Suresh B.

experimental part, p. 4442 - 4449 (2010/10/02)

Enantioselective synthesis of deoxy analogues of pyranonaphthoquinone antibiotics (+)-nanomycin A methyl ester, (+)eleutherin, (+)-allo-eleutherin, and (+)-thysanone was achieved in good overall yield with high enantio- and diastereoselectivity from the common intermediate (R)-3-(2,5-dimethoxyph.enyl) propane-1,2-diol. The intramolecular oxaPictet-Spengler cyclization of 6-a:ryl-l.,3-dioxolone was de-veloped for the first time and utilized in the enantioselective synthesis of (H-)-deoxynanomycin A methyl ester, whereas the intermolecular oxa-Pictet-Spengler cycllzation strategy was applied to the enantioselective synthesis of deoxy analogues of (+)-eleutherm, (+)-allo-eleutherin, and. (+)-thysanone,

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