6,7a-dimethyl-3,7-dioxo-4a,5-diphenyl-(4ar,7ac)-2,3,7,7a-tetrahydro-4aH-cyclopenta[1,3,4]oxadiazine-1-carboxylic acid ethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 52903-99-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,2,9,0 and 3 respectively; the second part has 2 digits, 9 and 9 respectively. Calculate Digit Verification of CAS Registry Number 52903-99: (7*5)+(6*2)+(5*9)+(4*0)+(3*3)+(2*9)+(1*9)=128 128 % 10 = 8 So 52903-99-8 is a valid CAS Registry Number.
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