2,8,8-trimethyl-7,10-dihydro-4H,8H-pyrano[3,4:5',6']pyrido[3',2':4,5]thieno[3,2-d][1,3]oxazin-4-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 166545-77-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,6,5,4 and 5 respectively; the second part has 2 digits, 7 and 7 respectively. Calculate Digit Verification of CAS Registry Number 166545-77: (8*1)+(7*6)+(6*6)+(5*5)+(4*4)+(3*5)+(2*7)+(1*7)=163 163 % 10 = 3 So 166545-77-3 is a valid CAS Registry Number.