138716-30-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138716-30-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,7,1 and 6 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 138716-30:
(8*1)+(7*3)+(6*8)+(5*7)+(4*1)+(3*6)+(2*3)+(1*0)=140
140 % 10 = 0
So 138716-30-0 is a valid CAS Registry Number.
138716-30-0Relevant academic research and scientific papers
Preparation method of isoxazole derivative
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Paragraph 0108-0113, (2019/12/02)
The invention relates to a preparation method of an isoxazole derivative, which comprises the following steps of mixing an propargyl alcohol derivative, a halogen source, an acid and a solvent, and heating to react; adding the hydroxylamine into the react
