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13177-56-5

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13177-56-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 13177-56-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,1,7 and 7 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 13177-56:
(7*1)+(6*3)+(5*1)+(4*7)+(3*7)+(2*5)+(1*6)=95
95 % 10 = 5
So 13177-56-5 is a valid CAS Registry Number.

13177-56-5Downstream Products

13177-56-5Relevant articles and documents

Contrasting Photosolvolytic Reactivities of 9-Fluorenol vs 5-Suberenol Derivatives. Enhanced Rate of Formation of Cyclically Conjugated Four ? Carbocations in the Excited State

Wan, Peter,Krogh, Erik

, p. 4887 - 4895 (1989)

The photosolvolysis of 9-fluorenol (1) and several of its derivatives, as well as related systems, has been studied in aqueous methanol and acetonitrile solutions.The primary aim of this study was to examine the effect of the internal cyclic array (ICA) of these compounds in promoting photosolvolysis with respect to the number of ? electrons available in the ICA.It was observed that 9-fluorenol derivatives photosolvolyze much more efficiently than any of the related systems studied in this work.In contrast, ground-state 9-fluorenol derivatives are the least reactive systems with respect to solvolysis.Quantum yields for methyl ether formation for photosolvolysis in 50percent MeOH-H2O are reported for 1-3.Rate constants for solvent-assisted photodehydroxylation (ks) are calculated on the basis of the proposed mechanism of heterolytic C-OH bond rupture in the primary photochemical step and are in the range (1.3-1.6)x1E10 s-1 for 1-3.

ORGANIC DERIVATIVES OF DIVALENT YTTERBIUM RYbX IN METALLATION RECTIONS

Rybakova, L. F.,Syutkina, O. P.,Petrov, E. S.,Shifrina, R. R.,Beletskaya, L. P.

, p. 1301 - 1303 (2007/10/02)

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