137513-57-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137513-57-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,5,1 and 3 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 137513-57:
(8*1)+(7*3)+(6*7)+(5*5)+(4*1)+(3*3)+(2*5)+(1*7)=126
126 % 10 = 6
So 137513-57-6 is a valid CAS Registry Number.
137513-57-6Relevant articles and documents
Conjugate additions of heteroanions to ethynyl p-tolyl (+)-(R)-sulfoxide
Guillot, Chantal,Maignan, Christian
, p. 4907 - 4908 (2007/10/02)
Conjugate additions of several heteroanions (thiolates, alkoxides, phenoxides) to ethynyl P-tolyl (+)-(R)-sulfoxide 1 proceed stereospecifically to give only (Z) isomers of 2-alkylthio- or alkoxy-(R)-vinylsulfoxides.