133649-17-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 133649-17-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,6,4 and 9 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 133649-17:
(8*1)+(7*3)+(6*3)+(5*6)+(4*4)+(3*9)+(2*1)+(1*7)=129
129 % 10 = 9
So 133649-17-9 is a valid CAS Registry Number.
133649-17-9Relevant academic research and scientific papers
Natural Tetrapyrrol Derivatives, Synthesis of Some Model Compounds for the Photodynamic Therapy
Mackenbrock, Ursula,Risch, Nikolaus
, p. 643 - 647 (2007/10/02)
In photodynamic therapy, di- and polymeric porphyrins with ether, ester or direct C-C linkages are the active components of hematoporphyrin derivative.Here we describe the synthesis of some new model compounds for such ether/ester dimers.
