133871-77-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 133871-77-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,8,7 and 1 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 133871-77:
(8*1)+(7*3)+(6*3)+(5*8)+(4*7)+(3*1)+(2*7)+(1*7)=139
139 % 10 = 9
So 133871-77-9 is a valid CAS Registry Number.
133871-77-9Relevant academic research and scientific papers
Synthesis of Isopentabromopseudilin
Hanefeld, Ulf,Laatsch, Hartmut
, p. 865 - 869 (2007/10/02)
Isopentabromopseudilin (4) and the analogous compounds 12g, 12h have been synthesized by base-catalyzed cyclization of substituted benzaldehydes with isocyanoacetic acid methyl ester (6).In contrast to the highly antibiotic and cytotoxic active natural pr
