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68731-63-5

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68731-63-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 68731-63-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,8,7,3 and 1 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 68731-63:
(7*6)+(6*8)+(5*7)+(4*3)+(3*1)+(2*6)+(1*3)=155
155 % 10 = 5
So 68731-63-5 is a valid CAS Registry Number.

68731-63-5Relevant articles and documents

An improved convergent strategy for the synthesis of oligoprenols

Yu, Xiong-Jie,Zhang, Hao,Xiong, Fang-Jun,Chen, Xu-Xiang,Chen, Fen-Er

experimental part, p. 1967 - 1974 (2009/02/07)

A practical and highly regio- and stereoselective synthesis of oligoprenols starting from commercially available geraniol is described. The convergent synthetic strategy features the iterative allyl-allyl coupling of monomers easily derived from geraniol that contain one reacting terminal functional group and the repetitive reductive elimination of the p-toluenesulfonyl (Ts) groups.

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