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138785-59-8

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138785-59-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 138785-59-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,7,8 and 5 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 138785-59:
(8*1)+(7*3)+(6*8)+(5*7)+(4*8)+(3*5)+(2*5)+(1*9)=178
178 % 10 = 8
So 138785-59-8 is a valid CAS Registry Number.

138785-59-8Relevant articles and documents

Asymmetric Catalysis, 77. - New Optically Active Pyrazole Derivatives for Enantioselective Catalysis

Brunner, Henri,Scheck, Thomas

, p. 701 - 710 (2007/10/02)

Starting from the amines 3-6 and the dipyrazolopyrazinedione 2, the optically active (pyrazolylmethyl)amines 11-14 have been synthesized.Furthermore, the preparation of the (+)-camphor-derived optically active pyrazole 17 is described.Pyrazoles 11-13 and 17 are introduced as chiral building blocks into the 2-(1-pyrazolyl)pyridines 30-33.The optically active compounds 23-25 are formed from 2-pyridine and 2,6-bispyridine, respectively, and (+)-3-(bromomethyl)pinane.The pyrazole derivatives 27-29 contain (+)-(1-phenylethyl)hydrazine as the optically active component.Key Words: Pyrazoles, optically active / Pyridines, 2--, 2,6-bis-, 2-(1-pyrazolyl)-

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