344444-71-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 344444-71-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,4,4,4,4 and 4 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 344444-71:
(8*3)+(7*4)+(6*4)+(5*4)+(4*4)+(3*4)+(2*7)+(1*1)=139
139 % 10 = 9
So 344444-71-9 is a valid CAS Registry Number.
344444-71-9Relevant articles and documents
Alkylation and Aldol Condensation Reactions of 1,3-Oxathiolanones
McIntosh, John M.,Mishra, Pratibha,Siddiqui, Maqbool A.
, p. 1036 - 1040 (1984)
Reaction of 2,2,4-trimethyl-1,3-oxathiolan-5-one (1b) with alkyl halides in the presence of LDA and HMPA give alkylation products only with very reactive halides.In contrast, 2,2-dimethyl-1,3-oxathiolan-5-one (1a) affords no alkylation products.Both 1a an
