1',6',6'-trimethyl-4-phenyl-3,4,5',6'-tetrahydro-1'H-spiro[pyrano[3,2-c]chromene-2,4'-pyrimidine]-5,2'-dione is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 30540-02-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,0,5,4 and 0 respectively; the second part has 2 digits, 0 and 2 respectively. Calculate Digit Verification of CAS Registry Number 30540-02: (7*3)+(6*0)+(5*5)+(4*4)+(3*0)+(2*0)+(1*2)=64 64 % 10 = 4 So 30540-02-4 is a valid CAS Registry Number.