Cas: 2235-01-0 | Gros, Philippe et al. made new progress in 1995

Dimethoxydiphenylmethane is one of ethers-buliding-blocks. Ethers feature bent C–O–C linkages. In dimethyl ether, the bond angle is 111° and C–O distances are 141 pm. The barrier to rotation about the C–O bonds is low. HPLC of Formula: 2235-01-0 The bonding of oxygen in ethers, alcohols, and water is similar. In the language of valence bond theory, the hybridization at oxygen is sp3.

Gros, Philippe;Le Perchec, Pierre;Senet, Jean-Pierre published 《Silica-supported guanidinium chloride-acetyl chloride as an efficient deprotecting reagent for acetals》 in 1995. The article was appeared in 《Journal of Chemical Research, Synopses》. They have made some progress in their research.HPLC of Formula: 2235-01-0 The article mentions the following:

Acetals have been treated with acetyl chloride in the presence of catalytic amounts of silica-supported guanidinium chloride to produce the corresponding aldehydes and ketones in good yields under neutral conditions. And Dimethoxydiphenylmethane (cas: 2235-01-0) was used in the research process.

Dimethoxydiphenylmethane is one of ethers-buliding-blocks. Ethers feature bent C–O–C linkages. In dimethyl ether, the bond angle is 111° and C–O distances are 141 pm. The barrier to rotation about the C–O bonds is low. HPLC of Formula: 2235-01-0 The bonding of oxygen in ethers, alcohols, and water is similar. In the language of valence bond theory, the hybridization at oxygen is sp3.

Reference:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem