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217481-38-4

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217481-38-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 217481-38-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,7,4,8 and 1 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 217481-38:
(8*2)+(7*1)+(6*7)+(5*4)+(4*8)+(3*1)+(2*3)+(1*8)=134
134 % 10 = 4
So 217481-38-4 is a valid CAS Registry Number.

217481-38-4Relevant articles and documents

Synthesis of 13C-dehydrocoelenterazine and NMR studies on the bioluminescence of a Symplectoteuthis model

Kuse, Masaki,Isobe, Minoru

, p. 2629 - 2639 (2007/10/03)

The bioluminescence of luminous squid (Symplectoteuthis oualaniensis) is presumed to be initiated by the addition of the sulfhydryl residue of a photoprotein to dehydrocoelenterazine (DCL). To clarify this step, a novel synthetic route was established to label DCL with 13C. Dithiothreitol (DTT) and glutathione (GSH) were used as photoprotein models. The addition of DTT and GSH to 13C-labeled DCL gave luminous chromophores. Its structures were confirmed by NMR and MS spectrometry. The DTT adduct emitted light under alkaline condition to produce an oxidized compound. Thus we succeeded in modeling the bioluminescence of a photoprotein with DTT. (C) 2000 Elsevier Science Ltd.

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