305378-70-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 305378-70-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,5,3,7 and 8 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 305378-70:
(8*3)+(7*0)+(6*5)+(5*3)+(4*7)+(3*8)+(2*7)+(1*0)=135
135 % 10 = 5
So 305378-70-5 is a valid CAS Registry Number.
305378-70-5Relevant academic research and scientific papers
Aldono-1,5-lactones: Preparation, nucleophilic substitution and deoxygenation reactions
Szewczyk,Banaszek
, p. 1275 - 1281 (2007/10/03)
Suitable protected aldono-1,5-lactones having 2-, 3-or 4-OH group free were converted into their corresponding trifluoromethanesulfonic (triflic) esters. In all cases but one the triflic group underwent nucleophilic substitution by treatment with Bu4
