1552-05-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1552-05-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,5,5 and 2 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1552-05:
(6*1)+(5*5)+(4*5)+(3*2)+(2*0)+(1*5)=62
62 % 10 = 2
So 1552-05-2 is a valid CAS Registry Number.
1552-05-2Relevant academic research and scientific papers
A method of preparing azo dye through coupling
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Paragraph 0042; 0075-0078, (2018/05/30)
The invention relates to an azo dye synthetic method, and particularly relates to a method of coupling a weak-alkaline arylamine diazonium salt and a phenol compound under alkaline conditions to prepare azo dye. Weak-alkaline arylamine diazonium salt filt
