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Benzaldehyde, 2-chloro-4-methoxy-5-methyl-, also known as 2-chloro-4-methoxy-5-methylbenzaldehyde, is an organic compound with the chemical formula C9H9ClO2. It is a derivative of benzaldehyde, featuring a chlorine atom at the 2-position, a methoxy group at the 4-position, and a methyl group at the 5-position. Benzaldehyde, 2-chloro-4-methoxy-5-methyl- is characterized by its distinct chemical structure and properties, which make it useful in various applications, such as in the synthesis of pharmaceuticals, agrochemicals, and other specialty chemicals. Its unique combination of functional groups allows for a range of chemical reactions and transformations, making it a valuable intermediate in organic chemistry.

84657-23-8

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84657-23-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 84657-23-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,4,6,5 and 7 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 84657-23:
(7*8)+(6*4)+(5*6)+(4*5)+(3*7)+(2*2)+(1*3)=158
158 % 10 = 8
So 84657-23-8 is a valid CAS Registry Number.

84657-23-8Relevant academic research and scientific papers

Monodentate Transient Directing Group Enabled Pd-Catalyzed Ortho-C-H Methoxylation and Chlorination of Benzaldehydes

Li, Feng,Zhou, Yirong,Yang, Heng,Wang, Ziqi,Yu, Qinqin,Zhang, Fang-Lin

supporting information, p. 3692 - 3695 (2019/05/24)

We report Pd-catalyzed ortho-C-H methoxylation and chlorination of benzaldehydes by employing monodentate transient directing groups (TDGs) as an alternative strategy to bidentate TDGs. More importantly, a single crystal of benzaldehyde imine ortho-cyclopalladium intermediate was successfully obtained, and its structure was unambiguously determined by X-ray diffraction, which clearly showed that it was a binuclear palladium species bridged by a pyridone ligand. The utility of this approach was further demonstrated through the synthesis of key intermediates of natural products and drugs.

Phenanthrene Synthesis: The Synthesis of Juncunone and the Micandrols-A, B, E, and F

Carvalho, Christopher F.,Sargent, Melvyn V.

, p. 1913 - 1918 (2007/10/02)

The synthesis of the naturally occurring phenanthrenes micandrol-A (1,7-dimethylphenanthrene-2,6-diol) (1), micandrol-B (9,10-dihydro-1,7-dimethylphenanthrene-2,6-diol) (2), micandrol-E (7-methoxy-1,2-dimethylphenanthrene-6-ol) (3), micandrol-F (9,10-dihy

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