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74282-77-2

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74282-77-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74282-77-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,2,8 and 2 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 74282-77:
(7*7)+(6*4)+(5*2)+(4*8)+(3*2)+(2*7)+(1*7)=142
142 % 10 = 2
So 74282-77-2 is a valid CAS Registry Number.

74282-77-2Upstream product

74282-77-2Relevant articles and documents

The endocyclic restriction test: The geometries of nucleophilic substitutions at sulfur(VI) and sulfur(II)

Jarboe, Stephen G.,Terrazas, Michael S.,Beak, Peter

supporting information; experimental part, p. 9627 - 9632 (2009/04/07)

(Chemical Equation Presented) The trajectories for nucleophilic substitutions at sulfur(VI) and sulfur(II) have been investigated by the endocyclic restriction test. On the basis of double-labeling experiments, the sulfur(VI) transfer in the conversion of 1 to 2 is found to be intramolecular, while the sulfur(VI) transfer in the conversion of 3 to 4 and the sulfur(II) transfer in the conversion of 5 to 6 are found to be intermolecular. These results are taken to be consistent with transition structures for these sulfur transfer reactions which require a large angle between the entering and leaving group, a geometry analogous to apical group positions in trigonal bipyramidal transition states.

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