<1,2-O-isopropylidene-β-L-threo-tetrofurano>-<3,4-f>-(3S,4S,5R,9S)-3-<3-<(tetrahydropyranyl)oxy>prop-1-ynyl>-5-carboxy-3-hydroxy-1,3,4,5,6,9-hexahydroisobenzofuran 5,3-lactone is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 98050-44-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,8,0,5 and 0 respectively; the second part has 2 digits, 4 and 4 respectively. Calculate Digit Verification of CAS Registry Number 98050-44: (7*9)+(6*8)+(5*0)+(4*5)+(3*0)+(2*4)+(1*4)=143 143 % 10 = 3 So 98050-44-3 is a valid CAS Registry Number.
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