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85597-92-8

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85597-92-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 85597-92-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,5,5,9 and 7 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 85597-92:
(7*8)+(6*5)+(5*5)+(4*9)+(3*7)+(2*9)+(1*2)=188
188 % 10 = 8
So 85597-92-8 is a valid CAS Registry Number.

85597-92-8Relevant articles and documents

A Novel Synthesis of 1H-Pyrrole-2,3,4,5-tetracarboxylates

Zaima, Tadataka,Matsunaga, Yoshiharu,Mitsuhashi, Keiryo

, p. 1 - 4 (2007/10/02)

A novel and convenient synthesis of 1H-pyrrole-2,3,4,5-tetracarboxylates is described.Photocyclization of 1,1'-bis(methoxycarbonyl)divinylamine with acetylenedicarboxylates gave 7-azabicyclohept-2-ene-1,2,3,4-tetracarboxylates 2a-i, which on melting split ethylene off to yield 1H-pyrrole-2,3,4,5-tetracarboxylates 3a-i quantitatively.

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