1,8-Diphenyl-3,4-dihydro-naphthalin-3,4-dicarbonsaeure-dimethylester, also known as 1,8-diphenyl-3,4-dihydro-2H-naphthalene-3,4-dicarboxylic acid dimethyl ester, is a complex organic compound with the molecular formula C23H22O4. It is a derivative of naphthalene, a bicyclic aromatic hydrocarbon, with two phenyl groups attached at the 1 and 8 positions. The compound features a dihydro-naphthalene core, which means one of the double bonds in the naphthalene ring has been reduced to a single bond, and a dicarboxylic acid functional group at the 3 and 4 positions. The dimethyl ester group indicates that the carboxylic acid groups are esterified with two methyl groups. 1,8-Diphenyl-3,4-dihydro-naphthalin-3,4-dicarbonsaeure-dimethylester is likely to be used in the synthesis of various pharmaceuticals, dyes, and other organic compounds due to its unique structure and reactivity.
The CAS Registry Mumber 7775-73-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,7,7 and 5 respectively; the second part has 2 digits, 7 and 3 respectively. Calculate Digit Verification of CAS Registry Number 7775-73: (6*7)+(5*7)+(4*7)+(3*5)+(2*7)+(1*3)=137 137 % 10 = 7 So 7775-73-7 is a valid CAS Registry Number.