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87512-13-8

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87512-13-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87512-13-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,5,1 and 2 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 87512-13:
(7*8)+(6*7)+(5*5)+(4*1)+(3*2)+(2*1)+(1*3)=138
138 % 10 = 8
So 87512-13-8 is a valid CAS Registry Number.

87512-13-8Downstream Products

87512-13-8Relevant articles and documents

SELECTIVE IPSO-SUBSTITUTION IN PYRIDINE RING AND ITS APPLICATION FOR THE SYNTHESIS OF MACROCYCLES CONTAINING BOTH OXA- AND THIA-BRIDGES

Furukawa, Naomichi,Ogawa, Satoshi,Kawai, Tsutomu,Oae, Shigeru

, p. 3243 - 3246 (1983)

Both the sulfinyl and sulfonyl groups directly bound to 2 or 4 position in pyridine were readily displaced by several nucleophiles such as RO(1-) and RS(1-) .The facility of the leaving groups is RSO2 = RSO > Br = Cl >> RS (R:alkyl or benzyl).The ipso-substitution could be applied for the synthesis of new type of 2,6-disubstituted macrocycles containing both carbon-oxygen and carbon-sulfur bridges in moderate yields.

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