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137472-45-8

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137472-45-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137472-45-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,4,7 and 2 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 137472-45:
(8*1)+(7*3)+(6*7)+(5*4)+(4*7)+(3*2)+(2*4)+(1*5)=138
138 % 10 = 8
So 137472-45-8 is a valid CAS Registry Number.

137472-45-8Relevant articles and documents

Nucleophile-induced ring enlargement of 1-(1-iodoalkyl)silacyclobutane and 1-(1,2-epoxyalkyl)silacyclobutane into silacyclopentane. Application to the synthesis of 1,4-diol, 4-alken-1-ol, and 1,4,5-triol

Matsumoto,Takeyama,Miura,Oshima,Utimoto

, p. 250 - 261 (2007/10/02)

Two methods for ring enlargement of silacyclobutane into silacyclopentane have been described. (1) Treatment of 1-(1-iodoalkyl)silacyclobutane with t-BuOK or AgOAc provided 2-alkyl-1-silacyclopentanes which were easily converted into 1,4-diols by oxidativ

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