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220106-55-8

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220106-55-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 220106-55-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,1,0 and 6 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 220106-55:
(8*2)+(7*2)+(6*0)+(5*1)+(4*0)+(3*6)+(2*5)+(1*5)=68
68 % 10 = 8
So 220106-55-8 is a valid CAS Registry Number.

220106-55-8Relevant articles and documents

A short synthesis of α-herbertenol featuring the use of a dihydropyranone as a 1,5-diketone synthon

Harrowven, David C.,Hannam, Joanne C.

, p. 9573 - 9574 (1998)

The paper describes a short synthesis of α-herbertenol. Key features are the addition of dihyropyranone 5 to an aryllithium to give 1,5-diketone 7; a titanium(O) mediated cyclisation of 7 to diol 8 and a sequential methylation of 8 to herbertenol methyl ether 9.

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