208716-58-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 208716-58-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,8,7,1 and 6 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 208716-58:
(8*2)+(7*0)+(6*8)+(5*7)+(4*1)+(3*6)+(2*5)+(1*8)=139
139 % 10 = 9
So 208716-58-9 is a valid CAS Registry Number.
208716-58-9Relevant academic research and scientific papers
The oxidation induced rearrangement of carbapenems to carbacephams
Feigelson, Gregg B.
, p. 3387 - 3390 (2007/10/03)
Upon dihydroxylation, carbapenems with an exocyclic vinyl sulfone at C- 2 were found to rearrange to 2-keto-3-hydroxy carbacephems. These products could then be converted into the corresponding carbacephems.
