74845-57-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74845-57-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,8,4 and 5 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 74845-57:
(7*7)+(6*4)+(5*8)+(4*4)+(3*5)+(2*5)+(1*7)=161
161 % 10 = 1
So 74845-57-1 is a valid CAS Registry Number.
InChI:InChI=1/C21H18/c1-13-7-6-10-17-14(2)18-12-11-16-8-4-5-9-19(16)21(18)15(3)20(13)17/h4-12H,1-3H3
74845-57-1Relevant articles and documents
Synthesis of 7,11,12-Trimethylbenzanthracene
Newman, Melvin S.
, p. 3249 - 3251 (2007/10/02)
Reaction of 1-naphthylmagnesium bromide with 3-methylphthalic anhydride gave an 86percent yield of a mixture of mostly 2-methyl-6-(1-naphthoyl)benzoic acid (2) and a little 3-methyl-2-(1-naphthoyl)benzoic acid (3).Heating this mixture with 80percent sulfu
