99172-43-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99172-43-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,1,7 and 2 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 99172-43:
(7*9)+(6*9)+(5*1)+(4*7)+(3*2)+(2*4)+(1*3)=167
167 % 10 = 7
So 99172-43-7 is a valid CAS Registry Number.
99172-43-7Relevant articles and documents
A naphthoquine phosphate process impurity and its synthesis method
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Paragraph 0057-0059, (2019/04/04)
The invention discloses a compound of formula (I) reported shown naphthoquine phosphate has not seen the structure of process impurities, and provides a alkyl aminomethyl phenol is converted into the corresponding alkyl ethoxy methyl phenol, or substitute
