133739-70-5 Usage
Chemical Properties
clear slightly yellow liquid
Check Digit Verification of cas no
The CAS Registry Mumber 133739-70-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,7,3 and 9 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 133739-70:
(8*1)+(7*3)+(6*3)+(5*7)+(4*3)+(3*9)+(2*7)+(1*0)=135
135 % 10 = 5
So 133739-70-5 is a valid CAS Registry Number.
InChI:InChI=1/C6H2BrF3/c7-4-1-3(8)2-5(9)6(4)10/h1-2H
133739-70-5Relevant articles and documents
Preparation method of 1-bromo-2,3,5-trifluorobenzene
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Paragraph 0020; 0021; 0022, (2018/03/25)
The invention discloses a preparation method of 1-bromo-2,3,5-trifluorobenzene. The preparation method comprises following steps: a, raw material treatment; b, bromination reaction; c, diazotization treatment, and d, deamination treatment. According to th