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91790-89-5

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91790-89-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91790-89-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,7,9 and 0 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 91790-89:
(7*9)+(6*1)+(5*7)+(4*9)+(3*0)+(2*8)+(1*9)=165
165 % 10 = 5
So 91790-89-5 is a valid CAS Registry Number.

91790-89-5Downstream Products

91790-89-5Relevant articles and documents

A NOVEL DIRECT SYNTHESIS OF AMIDINES FROM CARBOXYLIC ACIDS AND AMINES USING POLYPHOSPHORIC ACID TRIMETHYLSILYL ESTER (PPSE) AS CONDENSING AGENT

Kakimoto, Masa-aki,Ogata, Shin-ichi,Mochizuki, Amane,Imai, Yoshio

, p. 821 - 824 (1984)

It was found that amidines were obtained directly by the reaction of carboxylic acids with amines in the presence of PPSE, and the yields of amidines were dependent on the structure of amines rather than that of carboxylic acids.

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