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1251910-52-7

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1251910-52-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1251910-52-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,1,9,1 and 0 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1251910-52:
(9*1)+(8*2)+(7*5)+(6*1)+(5*9)+(4*1)+(3*0)+(2*5)+(1*2)=127
127 % 10 = 7
So 1251910-52-7 is a valid CAS Registry Number.

1251910-52-7Downstream Products

1251910-52-7Relevant articles and documents

A facile and general synthesis of tropolonyl-substituted chalcone derivatives

Chang, Mingqin,Li, Yang,Zhang, Hong,Gao, Wentao

experimental part, p. 269 - 273 (2010/10/03)

A facile and general synthesis of a series of new troplonyl-substituted chalcone derivatives by Claisen-Schmidt condensation reaction from 3-acetyltropolone and substituted benzaldehydes as well as pyridine aldehydes is described. The method using 5% aq. KOH as catalyst and 50% aq. methanol as solvent is attractive since it specifically generates (E )-isomers with high yields under mild reaction conditions.

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