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177969-53-8

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177969-53-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 177969-53-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,7,9,6 and 9 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 177969-53:
(8*1)+(7*7)+(6*7)+(5*9)+(4*6)+(3*9)+(2*5)+(1*3)=208
208 % 10 = 8
So 177969-53-8 is a valid CAS Registry Number.

177969-53-8Downstream Products

177969-53-8Relevant articles and documents

Process for the preparation of alkylated aromatic carboxylic acids and acyl halides

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, (2008/06/13)

The invention relates to a process for the preparation of polyalkylated aromatic carboxylic acids of formula I STR1 wherein R1, R2, R3, R4 and R5 are each independently of one another hydrogen, C1 -C20 alkyl, halogen or C5 -C8 cycloalkyl, with the proviso that at least two of the substituents R1, R2, R3, R4 or R5 are alkyl and/or cycloalkyl, by reacting corresponding aromatic hydrocarbons with carbon dioxide, which reaction is carried out observing special ratios of temperature and pressure. The invention furthermore relates to a one-pot process for the preparation of the corresponding acyl halides.

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