(+/-)-1,6a,11a,11b-Tetrahydro-5,7,8-trihydroxy-3,6a,10,11b-tetramethyldiindeno<7,1-bc:2,1-e>pyran-2,11-dione is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 78004-34-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,0,0 and 4 respectively; the second part has 2 digits, 3 and 4 respectively. Calculate Digit Verification of CAS Registry Number 78004-34: (7*7)+(6*8)+(5*0)+(4*0)+(3*4)+(2*3)+(1*4)=119 119 % 10 = 9 So 78004-34-9 is a valid CAS Registry Number.