221015-12-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 221015-12-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,0,1 and 5 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 221015-12:
(8*2)+(7*2)+(6*1)+(5*0)+(4*1)+(3*5)+(2*1)+(1*2)=59
59 % 10 = 9
So 221015-12-9 is a valid CAS Registry Number.
221015-12-9Relevant academic research and scientific papers
Bis-tetrahydrofurans from carbohydrates via iodoetherification and iodine substitution
Bertrand, Philippe,El Sukkari, Hanadi,Gesson, Jean-Pierre,Renoux, Brigitte
, p. 330 - 335 (2007/10/03)
Iodocyclization followed by nucleophilic displacement of iodine affords mainly trans-2,5-substituted THF related to annonaceous acetogenins.
