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20169-46-4

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20169-46-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20169-46-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,1,6 and 9 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 20169-46:
(7*2)+(6*0)+(5*1)+(4*6)+(3*9)+(2*4)+(1*6)=84
84 % 10 = 4
So 20169-46-4 is a valid CAS Registry Number.
InChI:InChI=1/C13H10ClNO2/c14-10-6-2-1-5-9(10)13(17)15-11-7-3-4-8-12(11)16/h1-8,16H,(H,15,17)

20169-46-4Relevant articles and documents

Iron(III) Chloride Mediated para-Selective C-H Functionalization: Access to C5-Chloro and C5,C7-Dichloro/Dianisyl Substituted 2-Arylbenzoxazoles

Panda, Niranjan,Sahoo, Kanchanbala

supporting information, (2022/02/03)

Iron(III) chloride mediated para-selective C?H chlorination and subsequent annulation of 2-amidophenol to synthesize C5- and C5, C7-chlorinated benzoxazoles was developed. Further, the oxidative cross-dehydrogenative coupling of amidophenol with anisole b

Novel Non-Nucleoside Inhibitors of HIV-1 Reverse Transcriptase. 2. Tricyclic Pyridobenzoxazepinones and Dibenzoxazepinones

Klunder, Janice M.,Hargrave, Karl D.,West, MaryAnn,Cullen, Ernest,Pal, Kollol,et al.

, p. 1887 - 1897 (2007/10/02)

Dibenzoxazepin-11(10H)-ones (III), pyridobenzoxazepin-6(5H)-ones (IV), and pyridobenzoxazepin-5(6H)-ones (V) were found to inhibit human immunodeficiency virus type 1 reverse transcriptase with IC50 values as 19 nM.A-ring substitution has a profound effect on activity, with appropriate substituents at the positions ortho and para to the lactam nitrogen providing dramatically enhanced potency.Substitution in the C-ring is generally neutral or detrimental to activity.Although a C-ring amino substituent at the position meta to the lactam carbonyl is generally beneficial to activity, it has essentially no effect when the A-ring is optimally substituted.Like the dipyridodiazepinone nevirapine, compounds III-V are specific for HIV-1 RT, exhibiting no inhibitory activity against HIV-2 RT or other virial reverse transcriptase enzymes.

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