138713-70-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138713-70-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,7,1 and 3 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 138713-70:
(8*1)+(7*3)+(6*8)+(5*7)+(4*1)+(3*3)+(2*7)+(1*0)=139
139 % 10 = 9
So 138713-70-9 is a valid CAS Registry Number.
138713-70-9Relevant academic research and scientific papers
Construction of the tricyclic ABC ring subunit of manzamine A via a novel intramolecular Diels-Alder reaction
Martin,Rein,Liao
, p. 6481 - 6484 (2007/10/02)
A novel entry to the manzamine A (1) has been designed that features an intramolecular Diels-Alder reaction of a vinylogous imide for the facile construction of the tricyclic core of 1 as illustrated by the conversions 8 and 16 → 9.
