103872-47-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 103872-47-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,3,8,7 and 2 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 103872-47:
(8*1)+(7*0)+(6*3)+(5*8)+(4*7)+(3*2)+(2*4)+(1*7)=115
115 % 10 = 5
So 103872-47-5 is a valid CAS Registry Number.
103872-47-5Relevant articles and documents
FRIEDEL-CRAFTS ACYLATION OF 1-TERT-BUTYLDIMETHYLSILYLPYRROLE, A VERY SHORT AND SIMPLE ROUTE TO 3-SUBSTITUTED PYRROLES.
Simchen, Gerhard,Majchrzak, Michal W.
, p. 5035 - 5036 (2007/10/02)
1-tert-Butyldimethylsilylpyrrole undergoes Friedel-Crafts acylation almost exclusively at β-position giving after sodium fluoride supported hydrolysis the 3-pyrroloketones.