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114738-38-4

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114738-38-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 114738-38-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,4,7,3 and 8 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 114738-38:
(8*1)+(7*1)+(6*4)+(5*7)+(4*3)+(3*8)+(2*3)+(1*8)=124
124 % 10 = 4
So 114738-38-4 is a valid CAS Registry Number.

114738-38-4Relevant articles and documents

Formation of 1-Phenyl-2,3-dioxabicycloheptane in the Reaction of 1,3-Dibromo-4-phenylcyclopentane with Hydrogen Peroxide in the Presence of Silver Trifluoroacetate

Takahashi, Kimio,Shiro, Motoo,Kishi, Morio

, p. 3098 - 3104 (2007/10/02)

Reaction of 1,3-dibromo-4-phenylcyclopentane (23), prepared from 4-hydroxycyclopent-2-en-1-one (10) in a stereocontrolled manner, or its stereoisomer 24 with anhydrous hydrogen peroxide in the presence of silver trifluoroacetate in ether gave 1-phenyl-2,3-dioxabicycloheptane (25) mainly as a rearranged product.The expected 5-phenyl-2,3-dioxabicycloheptane (8) and phenylcyclopentenyl hydroperoxides 26 and 27 were also formed in this reaction.An authentic sample of endoperoxide 8 was prepared by using peroxide transfer reaction between bis(tri-n-butyltin)peroxide and bistriflate of cis-diol 35.The stereochemistry of the endoperoxide 8 and related compounds in this series was confirmed by correlation with the data from X-ray crystallographic analysis of the diacetate of diol 21 obtained from endoperoxide 8 by stannous chloride reduction.

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