tert-butylimine of 6,10,14,18,22,26-hexamethylpentaeicosa-5Z,9Z,13E,17E,21E,25-hexaen-1-al is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 138540-33-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,5,4 and 0 respectively; the second part has 2 digits, 3 and 3 respectively. Calculate Digit Verification of CAS Registry Number 138540-33: (8*1)+(7*3)+(6*8)+(5*5)+(4*4)+(3*0)+(2*3)+(1*3)=127 127 % 10 = 7 So 138540-33-7 is a valid CAS Registry Number.