131021-83-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131021-83-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,0,2 and 1 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 131021-83:
(8*1)+(7*3)+(6*1)+(5*0)+(4*2)+(3*1)+(2*8)+(1*3)=65
65 % 10 = 5
So 131021-83-5 is a valid CAS Registry Number.
131021-83-5Relevant articles and documents
Mild and highly selective formyl protection of primary hydroxyl groups
De Luca, Lidia,Giacomelli, Giampaolo,Porcheddu, Andrea
, p. 5152 - 5155 (2002)
Efficient conversion of primary alcohols to the corresponding formate esters can be carried out at room temperature in methylene chloride, using 2,4,6-trichloro-1,3,5-triazine and N,N-dimethyl- formamide in the presence of lithium fluoride. This procedure