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690985-43-4

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690985-43-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 690985-43-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,9,0,9,8 and 5 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 690985-43:
(8*6)+(7*9)+(6*0)+(5*9)+(4*8)+(3*5)+(2*4)+(1*3)=214
214 % 10 = 4
So 690985-43-4 is a valid CAS Registry Number.

690985-43-4Downstream Products

690985-43-4Relevant articles and documents

Phthalocyanines and related compounds: XXXIX. Synthesis of derivatives of some substituted 1-phenylnaphthalene-2,3-dicarboxylic acids

Donyagina,Luk''yanets

, p. 795 - 799 (2007/10/03)

Derivatives (dinitriles, anhydrides, imides, N-phenylimides) of substituted 1-phenylnaphthalene-2,3-dicarboxylic and 1-phenylphenanthrene-2,3-dicarboxylic acids were prepared by the reactions of 2-bromomethylbenzophenones with various dienophiles. Starting from these derivatives, gallium complexes of substituted tetra-1-phenyl-2,3-naphthalocyanines and tetra(1-phenyl-2,3-phenanthro) porphyrazine were synthesized. 2005 Pleiades Publishing, Inc.

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