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266678-13-1

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266678-13-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 266678-13-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,6,6,6,7 and 8 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 266678-13:
(8*2)+(7*6)+(6*6)+(5*6)+(4*7)+(3*8)+(2*1)+(1*3)=181
181 % 10 = 1
So 266678-13-1 is a valid CAS Registry Number.

266678-13-1Relevant articles and documents

Regioselective Formation of Substituted Indoles: Formal Synthesis of Lysergic Acid

Beaudry, Christopher M.,Points, Gary L.,Stout, Kenneth T.

supporting information, p. 16655 - 16658 (2020/12/01)

A Diels–Alder reaction-based strategy for the synthesis of indoles and related heterocycles is reported. An intramolecular cycloaddition of alkyne-tethered 3-aminopyrones gives 4-substituted indolines in good yield and with complete regioselectivity. Additional substitution is readily tolerated in the transformation, allowing synthesis of complex and non-canonical substitution patterns. Oxidative conditions give the corresponding indoles. The strategy also allows the synthesis of carbazoles. The method was showcased in a formal synthesis of lysergic acid.

Synthesis of the 4-arylindole portion of the antitumor agent diazonamide and related studies

Chan, Fiona,Magnus, Philip,McIver, Edward G.

, p. 835 - 838 (2007/10/03)

The synthesis of 6 comprising the CDG rings of the diazonamides was achieved in an overall yield of 75% from commercially available 3. (C) 2000 Elsevier Science Ltd.

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