87513-57-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 87513-57-3 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 3 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 87513-57:
(7*8)+(6*7)+(5*5)+(4*1)+(3*3)+(2*5)+(1*7)=153
153 % 10 = 3
So 87513-57-3 is a valid CAS Registry Number.
87513-57-3Relevant articles and documents
An Investigation into the Regioselectivity of the Acid Catalysed Claisen Rearrangement of Methyl 4- and 5-Allyloxy-2-hydroxybenzoate and Derivatives
Harwood, Laurence M.
, p. 530 - 532 (2007/10/02)
The observed products from the acid catalysed Claisen rearrangement of the methyl esters (1c-g) indicate that, unlike the thermal reaction, regiochemical control is independent of internal hydrogen bonding.
