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89953-16-2

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89953-16-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 89953-16-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,9,5 and 3 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 89953-16:
(7*8)+(6*9)+(5*9)+(4*5)+(3*3)+(2*1)+(1*6)=192
192 % 10 = 2
So 89953-16-2 is a valid CAS Registry Number.

89953-16-2Downstream Products

89953-16-2Relevant articles and documents

Metal Complexes of Cyanamides and their Alkylation to Cyanamidium Salts. A General Synthesis of Highly Substituted Ureas, Isoureas, and Guanidines

Jochims, Johannes C.,Abu-El-Halawa, Rajab,Zsolnai, Laszlo,Huttner, Gottfried

, p. 1161 - 1177 (2007/10/02)

The complexes 3a - p were prepared from disubstituted cyanamides and Lewis acids.According to a X-ray structural analysis, the antimony pentachloride complex 3a is neither a ? nor a ? complex ( CN-Sb 133 deg).The complexes 3 with SbCl5 and FeCl3 can be alkylated with tertiary alkyl chlorides, affording crystalline cyanamidium salts (5a - m) which were characterized by reactions with water, primary or secondary alcohols to give ureas (11) and uronium salts (8a - z), respectively.The guanidinium salts 9a - s were obtained with ammonia, primary and secondary amines.

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