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134643-91-7

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134643-91-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 134643-91-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,6,4 and 3 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 134643-91:
(8*1)+(7*3)+(6*4)+(5*6)+(4*4)+(3*3)+(2*9)+(1*1)=127
127 % 10 = 7
So 134643-91-7 is a valid CAS Registry Number.

134643-91-7Upstream product

134643-91-7Downstream Products

134643-91-7Relevant articles and documents

REACTION OF SINGLET OXYGEN WITH ENOLIC TAUTOMERS OF β-DICARBONYLS. α-HYDROXYLATION OF 2-ACYL- AND 2-CARBOALKOXY-3,4-DIHYDRONAPHTHALEN-1(2H)-ONES

Yoshioka, Michikazu,Nishioka, Takashi,Hasegawa, Tadashi

, p. 1471 - 1474 (1991)

Dye-sensitized photooxidation of enolic tautomers of naphthalenones (5) gave hydroperoxynaphthalenones (6) and naphthols (7).Deoxygenation of 6 by triphenylphosphine gave hydroxynaphthalenones (8).

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