Biphenyl-3,3'-dicarboxylic acid dichloride, also known as 4,4'-dichloro-biphenyl-3,3'-dicarboxylic acid, is an organic compound with the chemical formula C14H8Cl2O4. It is a white crystalline solid that is soluble in organic solvents such as ethanol and acetone. Biphenyl-3,3'-dicarboxylic acid dichloride is primarily used as an intermediate in the synthesis of various pharmaceuticals, agrochemicals, and specialty chemicals. It is also utilized in the production of liquid crystal materials and as a monomer in the polymer industry. Due to its potential environmental and health impacts, handling and disposal of biphenyl-3,3'-dicarboxylic acid dichloride must be done with proper safety measures and in accordance with local regulations.
The CAS Registry Mumber 6423-26-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,4,2 and 3 respectively; the second part has 2 digits, 2 and 6 respectively. Calculate Digit Verification of CAS Registry Number 6423-26: (6*6)+(5*4)+(4*2)+(3*3)+(2*2)+(1*6)=83 83 % 10 = 3 So 6423-26-3 is a valid CAS Registry Number.