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67964-17-4

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67964-17-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 67964-17-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,7,9,6 and 4 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 67964-17:
(7*6)+(6*7)+(5*9)+(4*6)+(3*4)+(2*1)+(1*7)=174
174 % 10 = 4
So 67964-17-4 is a valid CAS Registry Number.

67964-17-4Relevant articles and documents

A new hydrogen-bonding motif for chiral recognition in the diastereomeric salts of racemic 1-phenylethylamine derivatives with enantiopure O-ethyl phenylphosphonothioic acid

Kobayashi, Yuka,Morisawa, Fumi,Saigo, Kazuhiko

, p. 4227 - 4230 (2004)

(Chemical Equation Presented) An enantiopure phosphonothioic acid showed a unique and superior chiral recognition ability, arising from its P-stereogenicity, for racemic 1-phenylethylamine derivatives through diastereomeric crystallization. Spherical molecular clusters, associated by hydrogen bonds and CH/π interactions, aggregated with high symmetry in the less-soluble diastereomeric salts.

Enantiopure O-substituted phenylphosphonothioic acids: Chiral recognition ability during salt crystallization and chiral recognition mechanism

Kobayashi, Yuka,Morisawa, Fumi,Saigo, Kazuhiko

, p. 606 - 615 (2007/10/03)

The chiral recognition ability of enantiopure O-methyl, O-ethyl, O-propyl, and O-phenyl phenylphosphonothioic acids (1a-d) for various kinds of racemic amines during salt crystallization and the chiral recognition mechanism were thoroughly investigated. T

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