77811-87-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77811-87-1 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, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 77811-87:
(7*7)+(6*7)+(5*8)+(4*1)+(3*1)+(2*8)+(1*7)=161
161 % 10 = 1
So 77811-87-1 is a valid CAS Registry Number.
77811-87-1Relevant 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
