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851096-55-4

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851096-55-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 851096-55-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,1,0,9 and 6 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 851096-55:
(8*8)+(7*5)+(6*1)+(5*0)+(4*9)+(3*6)+(2*5)+(1*5)=174
174 % 10 = 4
So 851096-55-4 is a valid CAS Registry Number.

851096-55-4Relevant articles and documents

Total synthesis of (-)-heliespirone a and (+)-heliespirone C

Norcott, Philip,McErlean, Christopher S. P.

, p. 5056 - 5062 (2014)

Total syntheses of the spiro-epimeric natural products (-)-heliespirone A and (+)-heliespirone C are described. The successful strategy involved an aromatic Claisen rearrangement, a diastereoselective Sharpless asymmetric dihydroxylation (AD) reaction, and an intramolecular oxa-Michael addition.

Total synthesis of (±)-heliannuol C and E via aromatic Claisen rearrangement

Vyvyan, James R.,Oaksmith, Jennifer M.,Parks, Bevin W.,Peterson, Elaine M.

, p. 2457 - 2460 (2007/10/03)

The total synthesis of heliannuol C and E from a common intermediate are described. Key steps in the synthesis include a regioselective aromatic Claisen rearrangement to install the (1-vinyl)-4-methyl-3-pentenyl substituent and regioselective biomimetic 7

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