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1228275-70-4

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1228275-70-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1228275-70-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,8,2,7 and 5 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1228275-70:
(9*1)+(8*2)+(7*2)+(6*8)+(5*2)+(4*7)+(3*5)+(2*7)+(1*0)=154
154 % 10 = 4
So 1228275-70-4 is a valid CAS Registry Number.

1228275-70-4Relevant academic research and scientific papers

Ring-construction/stereoselective functionalization cascade: Total synthesis of pachastrissamine (Jaspine B) through palladium-catalyzed bis-cyclization of propargyl chlorides and carbonates

Inuki, Shinsuke,Yoshimitsu, Yuji,Oishi, Shinya,Fujii, Nobutaka,Ohno, Hiroaki

experimental part, p. 3831 - 3842 (2010/09/03)

Figure presented Palladium(0)-catalyzed cyclization of bromoallenes, propargyl chlorides, and carbonates bearing hydroxy and benzamide groups as internal nucleophiles stereoselectively provides functionalized tetrahydrofuran. Cyclization reactivity is dependent on the relative configuration of the benzamide and leaving groups, and on the nature of the leaving groups. This bis-cyclization was used as the key step in a short total synthesis of pachastrissamine, which is a biologically active marine natural product.

Ring-construction/stereoselective functionalization cascade: Total synthesis of pachastrissamine (jaspine B) through palladium-catalyzed bis-cyclization of bromoallenes

Lnuki, Shinsuke,Yoshimitsu, Yuji,Oishi, Shinya,Fujii, Nobutaka,Ohno, Hiroaki

supporting information; experimental part, p. 4478 - 4481 (2009/12/24)

Palladium(0)-catalyzed cyclization of bromoallenes bearing hydroxyl and benzamide groups as internal nucleophiles stereoselectively provides functlonallzed tetrahydrofuran. With this bis-cyclizatlon as the key step, a short total synthesis of pachastrissa

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