5,5'-diphenyl-(3ar,6ac,3'ar',6'ac')-3a,6a,3'a,6'a-tetrahydro-3,3'-p-phenylene-bis-pyrrolo[3,4-d]isoxazole-4,6-dione is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 21154-72-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,1,5 and 4 respectively; the second part has 2 digits, 7 and 2 respectively. Calculate Digit Verification of CAS Registry Number 21154-72: (7*2)+(6*1)+(5*1)+(4*5)+(3*4)+(2*7)+(1*2)=73 73 % 10 = 3 So 21154-72-3 is a valid CAS Registry Number.