2H-5,9b-Ethanofuro[3,2-g]indolizin-2-one,4,- 5,7,8,9,9a-hexahydro-11-hydroxy-,(5R,9aS,- 9bS,11S)-rel-(+)- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 131989-89-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,9,8 and 9 respectively; the second part has 2 digits, 8 and 9 respectively. Calculate Digit Verification of CAS Registry Number 131989-89: (8*1)+(7*3)+(6*1)+(5*9)+(4*8)+(3*9)+(2*8)+(1*9)=164 164 % 10 = 4 So 131989-89-4 is a valid CAS Registry Number.