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889894-22-8

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889894-22-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 889894-22-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,8,9,8,9 and 4 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 889894-22:
(8*8)+(7*8)+(6*9)+(5*8)+(4*9)+(3*4)+(2*2)+(1*2)=268
268 % 10 = 8
So 889894-22-8 is a valid CAS Registry Number.

889894-22-8Relevant articles and documents

Efficient synthesis of propargylic ethers under the DBU conditions and its application to natural products synthesis

Yokoyama, Tadashi,Kutsumura, Noriki,Ohgiya, Tadaaki,Nishiyama, Shigeru

, p. 578 - 582 (2008/02/11)

Conversion of dibromides carrying O-functional groups at adjacent positions to the corresponding propargylic ethers was successfully carried out under the DBU conditions through 2-bromo-1-alkenes as intermediates. The optically active γ-lactone-class natural products, such as (-)-muricatacin (4) and (R,R)-sapinofuranone B (5) were synthesized using the propargylic ether intermediate produced by the elimination reaction mentioned above.

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