1252048-31-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1252048-31-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,2,0,4 and 8 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1252048-31:
(9*1)+(8*2)+(7*5)+(6*2)+(5*0)+(4*4)+(3*8)+(2*3)+(1*1)=119
119 % 10 = 9
So 1252048-31-9 is a valid CAS Registry Number.
1252048-31-9Relevant articles and documents
Synthesis and spectral studies of some novel pyrazole derivatives from chalcones precursors
Hamada
experimental part, p. 327 - 334 (2010/07/18)
Chalcones 1a-c were prepared by a base catalyzed Claisen-Schmidt condensation reaction. The dibromoderivatives 2a-c were obtained by treatment of chalcones with bromine in chloroform. Pyrazoles 4a-e were obtained either by refluxing of dibromochalcones 2a
