7531-07-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7531-07-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,5,3 and 1 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 7531-07:
(6*7)+(5*5)+(4*3)+(3*1)+(2*0)+(1*7)=89
89 % 10 = 9
So 7531-07-9 is a valid CAS Registry Number.
7531-07-9Relevant articles and documents
Two polymorphic forms of 2,5-bis-(4-methoxycarbonylphenyl)-1,3,4-oxadiazole
Reck, Guenter,Orgzall, Ingo,Schulz, Burkhard,Dietzel, Birgit
, p. o634-o635 (2007/10/03)
The title compound [systematic name: dimethyl 4,4′-(1,3,4-oxadiazole-2,5-diyl)diphenylenedicarboxylate], C18H14N2O5, crystallizes under similar conditions in two different orthorhombic crystalline forms. In both