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77443-87-9

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77443-87-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77443-87-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,4,4 and 3 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 77443-87:
(7*7)+(6*7)+(5*4)+(4*4)+(3*3)+(2*8)+(1*7)=159
159 % 10 = 9
So 77443-87-9 is a valid CAS Registry Number.

77443-87-9Downstream Products

77443-87-9Relevant academic research and scientific papers

CATALYTIC REACTION OF SOME DERIVATIVES OF ACETYLENE WITH DIAZOTIZED AROMATIC DIAMINES

Ganushchak, N. I.,Prokopishin, I. Yu.,Zyubrik, A. I.,Kurik, M. V.,Fomenko, G. P.

, p. 2207 - 2210 (2007/10/02)

The diazonium salts obtained from 4,4'-diaminobiphenyl, 4,4'-diamino-3,3'-dimethoxybiphenyl, bis(4-aminophenyl) sulfone, and bis(4-aminophenyl) ether react with propargyl alcohol, propiolic acid, and phenylacetylene in the presence of cuprous chloride with release of the nitrogen of both diazo groups and form the bischloroarylation products.

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