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136315-26-9

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136315-26-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 136315-26-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,6,3,1 and 5 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 136315-26:
(8*1)+(7*3)+(6*6)+(5*3)+(4*1)+(3*5)+(2*2)+(1*6)=109
109 % 10 = 9
So 136315-26-9 is a valid CAS Registry Number.

136315-26-9Downstream Products

136315-26-9Relevant articles and documents

Facile Optical Resolution of a Dibenzopyrazinoazepine Derivative and the Nature of Molecular Recognition of Amines by Chiral 2,3-Di-O-(arylcarbonyl)tartaric Acids

Tomori, Hiroshi,Yoshihara, Hisayoshi,Ogura, Katsuyuki

, p. 3581 - 3590 (2007/10/03)

A facile optical resolution of racemic 1,2,3,4,10,14b-hexahydrodibenzopyrazinoazepine (1) was developed using 2,3-di-O-benzoyl-D-(-)-tartaric acid ((+)-DBT) as a resolving agent.The resolution efficiency depends remarkably on the (+)-DBT:1 ratio.When (+)-DBT and racemic 1 were mixed in methanol-water (9:1 v/v) in a 1:4 stoichiometry, a crystalline salt consisting of (+)-DBT, (R)-1, methanol, and water in a 1:2:2:2 ratio crystallized preferentially in a fair yield.X-Ray crystallographic analysis showed its highly ordered supramolecular structure: (+)-DBT molecules self-assemble via hydrogen bonding with the aid of water and methanol to form a puckered layer, and stacking of (R)-1 molecules constructs a column which is sandwiched in between the puckered layers.The X-ray crystallographic data reported for the salts that consist of amines and DBT were reinvestigated to reveal that most of the host frameworks derived from DBT have a layer structure similar to the above puckered one.

Tetracyclic compounds having anti-allergic and anti-asthmatic activities and their use

-

, (2008/06/13)

Compounds of formula (I): STR1 in which: Q is nitrogen or =CH--; R1 and R2 are hydrogen, alkyl, alkoxy, hydroxy, trifluoromethyl or halogen; and R3 is a substituted alkyl groups or a pharmaceutically acceptable salt thereof have valuable anti-allergic and anti-asthmatic activities. The compounds are prepared by reacting a corresponding compound where R3 is replaced by a hydrogen atom with a compound to introduce the group R3.

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