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1575721-93-5

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1575721-93-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1575721-93-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,5,7,5,7,2 and 1 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1575721-93:
(9*1)+(8*5)+(7*7)+(6*5)+(5*7)+(4*2)+(3*1)+(2*9)+(1*3)=195
195 % 10 = 5
So 1575721-93-5 is a valid CAS Registry Number.

1575721-93-5Downstream Products

1575721-93-5Relevant articles and documents

Proton-exchanged montmorillonite-mediated reactions of methoxybenzyl esters and ethers

Chen, Dongyin,Xu, Chang,Deng, Jie,Jiang, Chunhuan,Wen, Xiaoan,Kong, Lingyi,Zhang, Ji,Sun, Hongbin

, p. 1975 - 1983 (2014/03/21)

Proton-exchanged montmorillonite (H-mont) was found to be an eco-friendly and cost-effective catalyst for the generation of O-methylated quinone methides (QM) from the corresponding p or o-methoxybenzyl esters and ethers. Nucleophilic trapping of the O-methylated QM with arenes, alcohols, 1,3-dicarbonyl compounds, silyl enol ethers, and allylsilanes has been carried out, respectively, leading to eco-friendly benzylation reactions. Using this protocol, H-mont-mediated deprotection of PMB-protected esters and ethers have been realized for the first time. This work would pave the way for further exploration in O-alkylated QM that are of chemical and biological significance.

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