1,2-dihydropyrrolo[3,2,1-kl]-phenothiazin-1,2-dione is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 29939-43-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,9,9,3 and 9 respectively; the second part has 2 digits, 4 and 3 respectively. Calculate Digit Verification of CAS Registry Number 29939-43: (7*2)+(6*9)+(5*9)+(4*3)+(3*9)+(2*4)+(1*3)=163 163 % 10 = 3 So 29939-43-3 is a valid CAS Registry Number.