134642-52-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 134642-52-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,6,4 and 2 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 134642-52:
(8*1)+(7*3)+(6*4)+(5*6)+(4*4)+(3*2)+(2*5)+(1*2)=117
117 % 10 = 7
So 134642-52-7 is a valid CAS Registry Number.
134642-52-7Relevant articles and documents
Intramolecular Photocyclization of N-pyridinium and N-(Arylmethyl)-2-halopyridinium Salts
Park, Y.-T.,Joo, C.-H.,Choi, C.-D.,Park, K.-S.
, p. 1083 - 1089 (2007/10/02)
Various N-pyridinium, N-(arylmethyl)-2-halopyridinium and N-(2-halobenzyl)isoquinolinium salts have been synthesized and their intramolecular photocyclization reactions studied.Upon irradiation the aqueous solution of N-(2-haloaryl)me