14639-88-4 Usage
Chemical Properties
Opal is the only commercial synthetic gemstone material that is not a single crystal. It consists of a three-dimensional diffraction grating of geometrically aligned spheres of SiO2·xH2O, where x is usually <10%.
Check Digit Verification of cas no
The CAS Registry Mumber 14639-88-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,4,6,3 and 9 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 14639-88:
(7*1)+(6*4)+(5*6)+(4*3)+(3*9)+(2*8)+(1*8)=124
124 % 10 = 4
So 14639-88-4 is a valid CAS Registry Number.