2-phenyl-N-((5aR)-1,3,7-trioxo-(5ar)-1,4,6,7-tetrahydro-3H,5aH-azeto[2,1-b]thieno[3,4-d][1,3]thiazin-6t-yl)-acetamide is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 74136-49-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,1,3 and 6 respectively; the second part has 2 digits, 4 and 9 respectively. Calculate Digit Verification of CAS Registry Number 74136-49: (7*7)+(6*4)+(5*1)+(4*3)+(3*6)+(2*4)+(1*9)=125 125 % 10 = 5 So 74136-49-5 is a valid CAS Registry Number.