81234-40-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81234-40-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,2,3 and 4 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 81234-40:
(7*8)+(6*1)+(5*2)+(4*3)+(3*4)+(2*4)+(1*0)=104
104 % 10 = 4
So 81234-40-4 is a valid CAS Registry Number.
81234-40-4Relevant academic research and scientific papers
A CONVENIENT SYNTHESIS OF 1H-1,2,4-TRIAZOL-1-YL-PROPAN-3-ONE DERIVATIVES BY MODIFIED MANNICH REACTION
Takahashi, Kimio,Shimizu, Sumio,Ogata, Masaru
, p. 809 - 816 (2007/10/02)
1H-1,2,4-Triazol-yl-propan-3-ones were synthesized regioselectively using a modified Mannich reaction.Reactions of enones and Mannich bases with imidazole are also described.