58686-39-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 58686-39-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,8,6,8 and 6 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 58686-39:
(7*5)+(6*8)+(5*6)+(4*8)+(3*6)+(2*3)+(1*9)=178
178 % 10 = 8
So 58686-39-8 is a valid CAS Registry Number.
InChI:InChI=1/C10H11N3O/c1-7-9(11)12-13(10(7)14)8-5-3-2-4-6-8/h2-7H,1H3,(H2,11,12)
58686-39-8Relevant articles and documents
Preparation of 4-methyl-2-pyrazolin-5-ones
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, (2008/06/13)
A method is described for the preparation of a 1-substituted 4-methyl-2-pyrazolin-5-one by catalytic hydrogenation under pressure and simultaneous methylation by means of paraformaldehyde of the appropriate 1-substituted 2-pyrazolin-5-one in a medium of an inert organic solvent comprising ammonium acetate.