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289472-07-7

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289472-07-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 289472-07-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,9,4,7 and 2 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 289472-07:
(8*2)+(7*8)+(6*9)+(5*4)+(4*7)+(3*2)+(2*0)+(1*7)=187
187 % 10 = 7
So 289472-07-7 is a valid CAS Registry Number.

289472-07-7Relevant articles and documents

A new preparation of 2,5-dihydro-1-benzoxepins using Mitsunobu cyclization, and the synthesis of natural radulanins

Yamaguchi, Seiji,Furihata, Katsunori,Miyazawa, Masahiro,Yokoyama, Hajime,Hirai, Yoshiro

, p. 4787 - 4790 (2000)

Mitsunobu cyclization of o-[4-hydroxy-3-methyl-2(Z)-butenyl]phenol 2a effected selective seven-membered cyclization to give 3-methyl-2,5-dihydro-1- benoxepin 1a. Using this procedure, natural radulanin A and radulanin A methyl ether were synthesized effec

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