172268-86-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 172268-86-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,2,2,6 and 8 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 172268-86:
(8*1)+(7*7)+(6*2)+(5*2)+(4*6)+(3*8)+(2*8)+(1*6)=149
149 % 10 = 9
So 172268-86-9 is a valid CAS Registry Number.
172268-86-9Relevant academic research and scientific papers
Total synthesis of natural and ent-fredericamycin A
Boger, Dale L.,Hüter, Ottmar,Mbiya, Kapiamba,Zhang, Minsheng
, p. 11839 - 11849 (2007/10/03)
A total synthesis of both enantiomers of the potent antitumor-antibiotic fredericamycin A is detailed based on a room temperature inverse electron demand Diels-Alder reaction of a N-sulfonyl-1-aza-1,3-butadiene for assemblage of a pyridone F ring precurso
