Cas 128141-13-9,C20H22O2

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Check Digit Verification of cas no

The CAS Registry Mumber 128141-13-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,1,4 and 1 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 128141-13:
(8*1)+(7*2)+(6*8)+(5*1)+(4*4)+(3*1)+(2*1)+(1*3)=99
99 % 10 = 9
So 128141-13-9 is a valid CAS Registry Number.

128141-13-9Upstream product

99337-53-8 2-(2-Phenyl-cyclopropylidenemethylene)-adamantane

128141-13-9Downstream Products

128141-13-9Relevant academic research and scientific papers

Reaction of singlet oxygen with alkenylidenecyclopropanes: Implication for a peroxyallyl intermediate

Akasaka, Takeshi,Misawa, Yoshihisa,Ando, Wataru

, p. 1173 - 1176 (2007/10/02)

Photosensitized oxygenation of adamantenylidenecyciopropanes (1) gave either the corresponding oxetanones (2a-c) or the cyclic ketones (4 and 5) depending on the substituent on the cyclopropane ring in addition to adamantanone. The results are rationalized in terms of initial formation of a perepoxide followed by that of a peroxyallyl intermediate.

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