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99679-73-9

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99679-73-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 99679-73-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,6,7 and 9 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 99679-73:
(7*9)+(6*9)+(5*6)+(4*7)+(3*9)+(2*7)+(1*3)=219
219 % 10 = 9
So 99679-73-9 is a valid CAS Registry Number.

99679-73-9Upstream product

99679-73-9Downstream Products

99679-73-9Relevant articles and documents

STERIC EFFECTS IN NEOPHILTIN(IV) CHEMISTRY

Lockhart, Thomas P.

, p. 179 - 186 (1985)

The stability and self-association in solution of (neophyl3Sn)2O, neophyl3SnOH, and (neophyl3Sn)2CO3 (neophyl = C6H5(CH3)2CCH2) have been examined by 119Sn NMR.The presence of Sn,Sn spin coupling through oxygen (2J(119Sn,117Sn)) has been used to distinguish between the distannoxane and stannol.Facile dehydration prevents the isolation of neophyl3SnOH from solution at room temperature and the equilibrium constant for H2O + (neophyl3Sn)2O 2neophyl3SnOH is 0.3 at 304 K.These observations are in sharp contrast with a previous report that the sterically bulky neophyl ligands render neophyl3SnOH stable toward dehydration. 1J(119Sn,13C) observed for neophyl3SnOH and (neophyl3Sn)2CO3 indicates that these compounds, unlike their n-alkyl-substituted homologues, are unassociated in solution, a result attributed to the steric bulk of the neophyl ligand.

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