137278-90-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137278-90-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,2,7 and 8 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 137278-90:
(8*1)+(7*3)+(6*7)+(5*2)+(4*7)+(3*8)+(2*9)+(1*0)=151
151 % 10 = 1
So 137278-90-1 is a valid CAS Registry Number.
137278-90-1Relevant articles and documents
Synthesis of 7,8-Dihydro-6H-pyrazoloquinolin-5-ones and Related Derivatives
Gatta, Franco,Pomponi, Massimo,Marta, Maurizio
, p. 1301 - 1308 (2007/10/02)
This paper describes the synthesis of a new series of 4-amino-1-(unsubstituted and chloro or fluoro substituted benzyl)-7,8-dihydro-6H-pyrazoloquinolin-5-ones 8 and the corresponding 7,8-dihydro-6H,9H-pyrazoloquinoline-4,5-diones 13.The deri
