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137320-89-9

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137320-89-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137320-89-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,3,2 and 0 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 137320-89:
(8*1)+(7*3)+(6*7)+(5*3)+(4*2)+(3*0)+(2*8)+(1*9)=119
119 % 10 = 9
So 137320-89-9 is a valid CAS Registry Number.

137320-89-9Downstream Products

137320-89-9Relevant articles and documents

Chemi- and Bio-luminescence of Coelenterazine Analogues with Phenyl Homologues at the C-2 Position

Qi, Chen Feng,Gomi, Yasushiro,Hirano, Takashi,Ohashi, Mamoru,Ohmiya, Yoshihiro,Tsuji, Frederick I.

, p. 1607 - 1612 (2007/10/02)

A series of phenyl homologues of coelenterazine substituted at the C-2 position were synthesized and their bio- and chemi-luminescence properties were investigated including the measurement of chemiluminescence spectra in various media.The light emitting species of each analogue was found to be a neutral form of a coelenteramide derivative in diethylene glycol dimethyl ether (DGM) containing a trace amount of acetate buffer (pH 5.60), while a monoanion was found only in dimethyl sulfoxide (DMSO) and a dianion was observed in DMSO containing a trace amount of aqueous sodium hydroxide.Based on pseudo first-order reaction kinetics, chemiluminescence rate constants were obtained in DGM containing a trace amount of acetate buffer.Each of the synthetic coelenterazine analogues was incorporated into recombinant apoaequorin to obtain a series of semisynthetic aequorins.Measurements of bioluminescence activities of the aequorins revealed that a benzyl group in the C-2 position was essential for efficient luminescence activity.A two-step incubation procedure was used to determine why some analogues gave less luminescence activity than the benzyl analogue and natural coelenterazine.

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