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140640-46-6

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140640-46-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 140640-46-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,0,6,4 and 0 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 140640-46:
(8*1)+(7*4)+(6*0)+(5*6)+(4*4)+(3*0)+(2*4)+(1*6)=96
96 % 10 = 6
So 140640-46-6 is a valid CAS Registry Number.

140640-46-6Downstream Products

140640-46-6Relevant articles and documents

Catalytic action of azolium salts. II. Aroylation of 4-chloroquinazolines with aromatic aldehydes catalyzed by 1,3-dimethylbenzimidazolium iodide

Miyashita,Matsuda,Iijima,Higashino

, p. 43 - 48 (2007/10/02)

When a mixture of 4-chloroquinazoline (7), an aromatic aldehyde 6, sodium hydride, and a catalytic amount of 1,3-dimethylbenzimidazolium iodide (1) in tetrahydrofuran (THF) was refluxed with stirring for an appropriate time, the chlorine atom of 7 was rep

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