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161321-34-2

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161321-34-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 161321-34-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,1,3,2 and 1 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 161321-34:
(8*1)+(7*6)+(6*1)+(5*3)+(4*2)+(3*1)+(2*3)+(1*4)=92
92 % 10 = 2
So 161321-34-2 is a valid CAS Registry Number.

161321-34-2Upstream product

161321-34-2Relevant articles and documents

Synthesis and Characterization of Photoactivatable Doxycycline Analogues Bearing Two-Photon-Sensitive Photoremovable Groups Suitable for Light-Induced Gene Expression

Goegan, Bastien,Terzi, Firat,Bolze, Frédéric,Cambridge, Sidney,Specht, Alexandre

, p. 1341 - 1348 (2018)

We report the synthesis and photolytic properties of caged 9-aminodoxycycline derivatives modified with 2-{4′-bis-[2-(2methoxyethoxy)ethyl]-4-nitrobiphenyl-3-yl}prop-1-oxy (EANBP) and PEG7-ylated (7-diethylamino-2-oxo-2H-chromen-4-yl)methyl (PEG7-DEACM) groups. 9-Aminodoxycycline is a tetracycline analogue capable of activating transcription through the inducible TetOn transgene expression system and can be regioselectively coupled to two-photon-sensitive photo-removable protecting groups by carbamoylation. The EANBP-based caged 9-aminodoxycycline showed complex photochemical reactions but did release 10 % of 9-aminodoxycycline. However, 9-(PEG7-DEACMamino)doxycycline exhibited excellent photolysis efficiency at 405 nm with quantitative release of 9-aminodoxycycline and a 0.21 uncaging quantum yield. Thanks to the good two-photon sensitivity of the DEACM chromophore, 9-aminodoxycycline release by two-photon photolysis is possible, with calculated action cross-sections of up to 4.0 GM at 740 nm. Therefore, 9-(PEG7-DEACMamino)doxycycline represents a very attractive tool for the development of a light-induced gene expression method in living cells.

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