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14670-55-4

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14670-55-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 14670-55-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,4,6,7 and 0 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 14670-55:
(7*1)+(6*4)+(5*6)+(4*7)+(3*0)+(2*5)+(1*5)=104
104 % 10 = 4
So 14670-55-4 is a valid CAS Registry Number.

14670-55-4Upstream product

14670-55-4Relevant articles and documents

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Hsieh et al.

, (1958)

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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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