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25982-03-0

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25982-03-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 25982-03-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,5,9,8 and 2 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 25982-03:
(7*2)+(6*5)+(5*9)+(4*8)+(3*2)+(2*0)+(1*3)=130
130 % 10 = 0
So 25982-03-0 is a valid CAS Registry Number.

25982-03-0Downstream Products

25982-03-0Relevant articles and documents

MECHANISM OF QUERCETIN OXYGENATION A POSSIBLE MODEL FOR HAEM DEGRADATION

Rajananda, V.,Brown, Stanley B.

, p. 4331 - 4334 (1981)

Quercetin undergoes base-catalysed oxidative decarbonylation by a mechanism involving only one oxygen molecule, unlike the apperently similar step in haem catabolism, which requires two oxygen molecules.

Matsuura et al.

, p. 6370 (1967)

Radical-capturing reaction of 5,7,3′,4′-tetramethylquercetin with the AIBN radical initiator

Ishikawa, Takahiro,Takagi, Michiyo,Kanou, Mamiko,Kawai, Shingo,Ohashi, Hideo

, p. 173 - 177 (2007/10/03)

In order to clarify the mechanism for the radical-capturing reaction which is initiated at the C3-hydroxyl group of flavonols, 5,7,3′,4′-tetramethylquercetin (TMQ) was reacted with the 2,2′-azobis-isobutyronitrile (AIBN) radical initiator in benzene. Six products, one depside and its two hydrolytic products, one nitrite adduct, and two others, were isolated from the reaction mixture, and their structures were determined by instrumental analyses. The quantitative change to the four main products against the reaction time was measured by an HPLC method. The radical-capturing reaction pathway for TMQ with AIBN is proposed from these products and their quantitative changes. The pathway dividing into two clearly reveals that one subpath formed the depside and its hydrolytic products, while the other formed the nitrite adduct. The reactivity of each two sub-path was nearly the same, different from the case of TMQ and the 2,2′-azobis-2,4-dimethylvaleronitrile (AMVN) radical initiator.

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