19687-13-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19687-13-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,6,8 and 7 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 19687-13:
(7*1)+(6*9)+(5*6)+(4*8)+(3*7)+(2*1)+(1*3)=149
149 % 10 = 9
So 19687-13-9 is a valid CAS Registry Number.
19687-13-9Relevant articles and documents
Trifluoroethanol/difluoroethanol reagent as well as preparation method and application thereof
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Paragraph 0190-0200, (2021/03/11)
The invention relates to a trifluoroethanol/difluoroethanol reagent and a preparation method and an application thereof, the chemical structural formula of the trifluoroethanol reagent is shown in thespecification, in the formula, R1, R2 and R3 represent
