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128756-54-7

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128756-54-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128756-54-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,7,5 and 6 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 128756-54:
(8*1)+(7*2)+(6*8)+(5*7)+(4*5)+(3*6)+(2*5)+(1*4)=157
157 % 10 = 7
So 128756-54-7 is a valid CAS Registry Number.

128756-54-7Downstream Products

128756-54-7Relevant articles and documents

FURTHER STUDIES ON CARBON-CARBON BOND FORMATION BASED ON THE RADICAL REACTIONS OF ACYL DERIVATIVES OF N-HYDROXY-2-THIOPYRIDONE

Barton, Derek H. R.,Sarma, Jadab C.

, p. 1965 - 1968 (1990)

By careful exclusion of oxygen, carbon radicals, generated from the W lamp photolysis of O-acyl derivatives of N-hydroxy-2-thiopyridone, can be added efficiently to methylvinyl ketone.Extension to the radical from pent-4-enoic acid provides another synthesis of cyclopentane derivatives.Analogous additions with other electrophilic olefins are also reported.

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