10542-55-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 10542-55-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,0,5,4 and 2 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 10542-55:
(7*1)+(6*0)+(5*5)+(4*4)+(3*2)+(2*5)+(1*5)=69
69 % 10 = 9
So 10542-55-9 is a valid CAS Registry Number.
10542-55-9Relevant articles and documents
Preparation method of 2-amino-4'-fluoro-diphenyl ketone
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Paragraph 0040-0041; 0044-0045; 0048-0049; 0052-0053, (2018/03/01)
The invention discloses a preparation method of 2-amino-4'-fluoro-diphenyl ketone. The preparation method comprises the following steps that ortho-nitrotoluene is chloridized by chlorine gas to obtainO-nitrotrichlorotoluene; then the O-nitrotrichlorotolue