137677-94-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137677-94-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,6,7 and 7 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 137677-94:
(8*1)+(7*3)+(6*7)+(5*6)+(4*7)+(3*7)+(2*9)+(1*4)=172
172 % 10 = 2
So 137677-94-2 is a valid CAS Registry Number.
137677-94-2Relevant articles and documents
AROMATIC DIAMINES OF HIGH FLUORINE CONTENT
Nadji, S.,Tesoro, G. C.,Pendharkar, S.
, p. 327 - 338 (2007/10/02)
Fluorine-containing aromatic diamines have been synthesized as monomers for an investigation of polyimides of low dielectric constant.For most compounds, the synthetic route has been based on nucleophilic aromatic substitution of alcohols and phenols, on
