139748-18-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139748-18-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,7,4 and 8 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 139748-18:
(8*1)+(7*3)+(6*9)+(5*7)+(4*4)+(3*8)+(2*1)+(1*8)=168
168 % 10 = 8
So 139748-18-8 is a valid CAS Registry Number.
InChI:InChI=1/C7H11NO2/c9-4-5-1-6-2-7(10)8(6)3-5/h5-6,9H,1-4H2/t5-,6+/m1/s1
139748-18-8Relevant articles and documents
A palladium-catalyzed, abnormal hydrogenolytic ring-cleavage reaction of fused β-lactams
Konosu,Oida
, p. 609 - 611 (2007/10/02)
Bicyclic β-lactams, such as 1-oxa- and 1-carba-penams, are reductively cleaved between the lactam carbonyl group and the α-carbon by palladium catalysts to give formamide derivatives.