244140-55-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 244140-55-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,4,4,1,4 and 0 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 244140-55:
(8*2)+(7*4)+(6*4)+(5*1)+(4*4)+(3*0)+(2*5)+(1*5)=104
104 % 10 = 4
So 244140-55-4 is a valid CAS Registry Number.
244140-55-4Relevant articles and documents
Stereoselective preparation of 4,5-dihydroxy-5,6-dihydro-4H-1,2-oxazines and their derivatives
Zimmer,Homann,Angermann,Reissig
, p. 1223 - 1235 (1999)
cis-Dihydroxylation of 6H-1,2-oxazines 1 proceeds efficiently either by potassium permanganate at low temperature (Method A) or by ruthenium trichloride/sodium periodate at 0-5°C (Method B). The resulting 4,5- dihydroxylated 1,2-oxazines 2 were usually ob
