33956-01-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 33956-01-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,9,5 and 6 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 33956-01:
(7*3)+(6*3)+(5*9)+(4*5)+(3*6)+(2*0)+(1*1)=123
123 % 10 = 3
So 33956-01-3 is a valid CAS Registry Number.
InChI:InChI=1/C36H52ClN3O3/c1-5-7-8-9-10-11-12-13-14-15-16-17-18-20-29-21-19-22-30(25-29)43-32(6-2)36(42)38-33-26-34(41)40(39-33)35-28(4)23-27(3)24-31(35)37/h19,21-25,32H,5-18,20,26H2,1-4H3,(H,38,39,42)
33956-01-3Relevant academic research and scientific papers
Method for preparing 2-pyrazolin-5-ones from 1,2,4-oxadiazoles
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, (2008/06/13)
A method for preparing 2-pyrazolin-5-ones from 1,2,4-oxadiazoles is described. The method comprises forming a liquid reaction system of a base catalyst and a 1,2,4-oxadiazole in an organic liquid reaction medium and heating the reaction system to a temperature sufficient to cause the 1,2,4-oxadiazole to be rearranged to a 2-pyrazolin-5-one.