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99634-01-2

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99634-01-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 99634-01-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,6,3 and 4 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 99634-01:
(7*9)+(6*9)+(5*6)+(4*3)+(3*4)+(2*0)+(1*1)=172
172 % 10 = 2
So 99634-01-2 is a valid CAS Registry Number.

99634-01-2Relevant articles and documents

Cleavage∕cross-coupling strategy for converting β-O-4 linkage lignin model compounds into high valued benzyl amines via dual C–O bond cleavage

Jia, Le,Li, Chao-Jun,Zeng, Huiying

, (2021/10/29)

Lignin is the most recalcitrant of the three components of lignocellulosic biomass. The strength and stability of the linkages have long been a great challenge for the degradation and valorization of lignin biomass to obtain bio-fuels and commercial chemicals. Up to now, the selective cleavage of C–O linkages of lignin to afford chemicals contains only C, H and O atoms. Our group has developed a cleavage/cross-coupling strategy for converting 4-O-5 linkage lignin model compounds into high value-added compounds. Herein, we present a palladium-catalyzed cleavage/cross-coupling of the β-O-4 lignin model compounds with amines via dual C–O bond cleavage for the preparation of benzyl amine compounds and phenols.

Gold nanoparticles stabilized by graphene quantum dots as catalysts for C–C bond cleavage in β-O-4 lignin model compounds

Zhang, Fangwei,Zhang, Jiali,Guo, Shouwu

, p. 105 - 109 (2019/04/08)

In this work, we report oxidative cleavage of C–C bonds in β-O-4 lignin models that is catalyzed by gold nanoparticles stabilized by graphene quantum dots (AuNPs-GQDs). We demonstrate that GQDs can enhance the catalytic activity of AuNPs. The AuNPs-GQDs shows the highest catalytic activity when the mass ratio of AuNPs to GQDs is of 1:18. Moreover, AuNPs-GQDs exhibits higher activity in the cleavage of Cα–Cβ bond of the compounds when their Cβ is adjacent to an oxygen atom. The possible oxidation pathway is proposed.

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