Cas 127635-90-9,C<sub>20</sub>H<sub>20</sub>

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Check Digit Verification of cas no

The CAS Registry Mumber 127635-90-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,7,6,3 and 5 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 127635-90:
(8*1)+(7*2)+(6*7)+(5*6)+(4*3)+(3*5)+(2*9)+(1*0)=139
139 % 10 = 9
So 127635-90-9 is a valid CAS Registry Number.

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127635-90-9Relevant academic research and scientific papers

Intramolecular [2 + 2] photocycloaddition. 10. conformationally stable syn-[2.2]metacyclophanes

Nishimura, Jim,Horikoshi, Yoichiro,Wada, Yasuhiro,Takahashi, Hideo,Sato, Mitsuo

, p. 3485 - 3489 (2007/10/02)

Three isomerized 1,2:9,10-diethano-syn-[2.2] metacy elephants 5, 6, and 7 were prepared from cis-1,2-bis(mvinylphenyl)cyclobutane by photocycloaddition. Their yields were 10, 5, and 3%, respectively. 1H NMR chemical shifts of aromatic protons f

INTRAMOLECULAR (2 + 2) PHOTOCYCLOADDITION. 6. SYNTHESIS AND PROPERTIES OF OXACYCLOPHANES

Nishimura, Jun,Horikoshi, Yoichiro,Wada, Yasuhiro,Takahashi, Hideo,Machino, Satoshi,Oku, Akira

, p. 5439 - 5442 (2007/10/02)

Several oxacyclophanes were prepared by a new photocyclization of styrene derivatives.Cyclophanes 2d and e underwent C-O bond cleavage and gave olefin 6a and b by subsequent transformations, respectively.

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