(2S,3aR,3bS,7aS)-4-[1-Hydroxy-meth-(Z)-ylidene]-2,3b-dimethyl-5-oxo-2,3,3a,3b,4,5,7,7a-octahydro-1H-cyclopenta[a]pentalene-2-carboxylic acid is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 97673-21-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,6,7 and 3 respectively; the second part has 2 digits, 2 and 1 respectively. Calculate Digit Verification of CAS Registry Number 97673-21: (7*9)+(6*7)+(5*6)+(4*7)+(3*3)+(2*2)+(1*1)=177 177 % 10 = 7 So 97673-21-7 is a valid CAS Registry Number.
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