4,13-Dioxa-3,14-disilahexadeca-5,11-diene,
2,2,3,3,14,14,15,15-octamethyl-, (Z,Z)- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 138236-23-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,2,3 and 6 respectively; the second part has 2 digits, 2 and 3 respectively. Calculate Digit Verification of CAS Registry Number 138236-23: (8*1)+(7*3)+(6*8)+(5*2)+(4*3)+(3*6)+(2*2)+(1*3)=124 124 % 10 = 4 So 138236-23-4 is a valid CAS Registry Number.