65471-77-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 65471-77-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,5,4,7 and 1 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 65471-77:
(7*6)+(6*5)+(5*4)+(4*7)+(3*1)+(2*7)+(1*7)=144
144 % 10 = 4
So 65471-77-4 is a valid CAS Registry Number.
65471-77-4Relevant articles and documents
High-yield oxapium iodide preparation method
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Paragraph 0030; 0035; 0040; 0045; 0050, (2017/08/28)
The invention discloses a high-yield oxapium iodide preparation method, which comprises: S1, preparing 2-phenyl-2-cyclohexyl-4-bromomethyl-1,3-dioxole: adding a boron trifluoride diethyl ether complex to dried cyclohexyl phenyl ketone in a dropwise manner