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1737-51-5

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1737-51-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1737-51-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,7,3 and 7 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1737-51:
(6*1)+(5*7)+(4*3)+(3*7)+(2*5)+(1*1)=85
85 % 10 = 5
So 1737-51-5 is a valid CAS Registry Number.

1737-51-5Relevant articles and documents

Reformatsky-type aldol reactions of 4-bromo-4,4-difluoroacetoacetate with aldehydes and ketones

Wang, Yanli,Zhu, Shizheng

, p. 5741 - 5744 (2001)

In the presence of zinc and a catalytic amount of copper(I) chloride, 4-bromo-4,4-difluoroacetoacetate 4 reacted with a series of aromatic aldehydes and aryl alkyl ketones to give the corresponding δ-hydroxyl-γ,γ-difluoro-β-ketoesters 6 in good to excellent yields under mild conditions.

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