87223-35-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 87223-35-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,2,2 and 3 respectively; the second part has 2 digits, 3 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 87223-35:
(7*8)+(6*7)+(5*2)+(4*2)+(3*3)+(2*3)+(1*5)=136
136 % 10 = 6
So 87223-35-6 is a valid CAS Registry Number.
87223-35-6Relevant articles and documents
INTRAMOLECULAR SULFONAMIDE-CARBOXAMIDE REARRANGEMENT.
Hovius, Klaas,Wagenaar, Anno,Engberts, Jan B. F. N.
, p. 3137 - 3140 (2007/10/02)
Several o-carboxy-N,N-dialkylbenzenesulfonamides rearrange intramolecularly to o-chlorosulfonyl-N,N-dialkylbenzamides upon treatment with an excess of thionyl chloride in an apolar solvent.
