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77811-73-5

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77811-73-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77811-73-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,8,1 and 1 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 77811-73:
(7*7)+(6*7)+(5*8)+(4*1)+(3*1)+(2*7)+(1*3)=155
155 % 10 = 5
So 77811-73-5 is a valid CAS Registry Number.

77811-73-5Downstream Products

77811-73-5Relevant articles and documents

Conversion of α-Arylidene-γ-phenyl-Δβ,γ-butenolides into Nitrogen Heterocycles

Khattab, Samir A.,Hosny, Mohammad M.

, p. 1038 - 1043 (2007/10/02)

Treatment of α-arylidene-γ-phenyl-Δβ,γ-butenolides (I) with strong nucleophiles brings about opening of the γ-lactone ring with the formation of acyclic acid derivatives (II).The acid hydrazides (IIa-d) undergo facile condensation with carbonyl

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