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167101-48-6

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167101-48-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 167101-48-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,7,1,0 and 1 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 167101-48:
(8*1)+(7*6)+(6*7)+(5*1)+(4*0)+(3*1)+(2*4)+(1*8)=116
116 % 10 = 6
So 167101-48-6 is a valid CAS Registry Number.

167101-48-6Downstream Products

167101-48-6Relevant articles and documents

Total synthesis of furanether B. An application of a [3 + 4] annulation strategy

Molander,Carey

, p. 4845 - 4849 (1995)

Furanether B has been synthesized by a route starting from the known dichloro ketone 6. Crucial to the success of the synthesis was the preparation of cyclobutene 5 and oxidative cleavage of this substrate to provide the cis-1,4-keto aldehyde 3. This dicarbonyl dielectrophile subsequently underwent a TMSOTf catalyzed [3 + 4] annulation with the bis(trimethylsilyl) enol ether 4 to afford the tricyclic ether 2. Conversion of 2 into butenolide 19, followed by DIBALH reduction, completed the synthesis.

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