40348-04-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 40348-04-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,3,4 and 8 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 40348-04:
(7*4)+(6*0)+(5*3)+(4*4)+(3*8)+(2*0)+(1*4)=87
87 % 10 = 7
So 40348-04-7 is a valid CAS Registry Number.
40348-04-7Relevant articles and documents
O-SILYLATED ENOLATE PHENYLTHIOALKYLATION: a SYNTHESIS OF α,β-UNSATURATED 5- AND 6-MEMBERED LACTONES.
Khan, Hassan A.,Paterson, Ian
, p. 5083 - 5084 (1982)
ZnBr2-catalysed phenylthioalkylation of keten bis(trimethylsilyl)acetals, obtained from carboxylic acids, with appropriate α-chlorosulphides can be used to prepare γ- and δ-lactones.