903-19-5 Usage
Flammability and Explosibility
Notclassified
Check Digit Verification of cas no
The CAS Registry Mumber 903-19-5 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 9,0 and 3 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 903-19:
(5*9)+(4*0)+(3*3)+(2*1)+(1*9)=65
65 % 10 = 5
So 903-19-5 is a valid CAS Registry Number.
InChI:InChI=1/C22H38O2/c1-7-9-11-13-21(3,4)17-15-20(24)18(16-19(17)23)22(5,6)14-12-10-8-2/h15-16,23-24H,7-14H2,1-6H3
903-19-5Relevant articles and documents
Process for the C-alkylation of aromatic hydroxyl compounds
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, (2008/06/13)
Disclosed is a process for the preparation of dialkyl aromatic hydroxyl compounds such as dialkylphenols, dialkylbenzenediols, dialkylnaphthols and dialkylnaphthalenediols, especially 2,5-dialkylhydroquinone, by contacting an aromatic hydroxy compound with an olefin in the presence of a sulfonic acid and sulfuric acid.