138631-41-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138631-41-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,6,3 and 1 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 138631-41:
(8*1)+(7*3)+(6*8)+(5*6)+(4*3)+(3*1)+(2*4)+(1*1)=131
131 % 10 = 1
So 138631-41-1 is a valid CAS Registry Number.
138631-41-1Relevant articles and documents
A 4-( benzene butoxy) benzoic acid synthesis method
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Paragraph 0041-0045, (2017/01/23)
The invention relates to a method for chemically synthetizing 4-(benzene butoxy) benzoic acid. The method comprises the following steps: causing benzene butanol as shown in a formula (II) to carry out thermal reaction in the presence of alkali, and then i