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286428-24-8

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286428-24-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 286428-24-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,6,4,2 and 8 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 286428-24:
(8*2)+(7*8)+(6*6)+(5*4)+(4*2)+(3*8)+(2*2)+(1*4)=168
168 % 10 = 8
So 286428-24-8 is a valid CAS Registry Number.

286428-24-8Relevant articles and documents

The Use of Acyclic Monoterpenes in the Preparation of β-pyrones; Synthesis of the Right-hand Fragment of Usneoidone E

Urones, Julio G.,Diez, David,Marcos, Isidro S.,Basabe, Pilar,Lithgow, Anna M.,et al.

, p. 3691 - 3704 (2007/10/02)

The right hand fragment, 36, of Usneoidone E, 1, a powerful antiviral and antitumoural agent has been synthesized from the β-pyrone 32.Using lanalool as starting material, a 2,2,6,6-tetrasubstituted dihydropyrane 20, precursor of 32 and 33, was prepared. 20 was also synthesized from geranyl acetate through selenide 7, and is a versatile precursor for the synthesis of tetraprenyltoluquinols.Unambiguous 13C NMR assignment has been done by 2D correlations.

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