155883-53-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 155883-53-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,5,8,8 and 3 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 155883-53:
(8*1)+(7*5)+(6*5)+(5*8)+(4*8)+(3*3)+(2*5)+(1*3)=167
167 % 10 = 7
So 155883-53-7 is a valid CAS Registry Number.
155883-53-7Relevant academic research and scientific papers
Vilsmeier-Haack-Arnold and bromination reactions of 4H-pyrazolo[1,5- a]indole derivatives
Shen,Katayama,Takatsu
, p. 237 - 245 (2007/10/02)
As typical electrophilic substitution reactions of the 4H-pyrazolo[1,5- a]indole derivatives, the Vilsmeier-Haack-Arnold (V.H.A.) and bromination reactions were investigated in detail and mechanisms involving the 4H- pyrazolo[1,5-a]indoles as reaction int
