83507-20-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 83507-20-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,5,0 and 7 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 83507-20:
(7*8)+(6*3)+(5*5)+(4*0)+(3*7)+(2*2)+(1*0)=124
124 % 10 = 4
So 83507-20-4 is a valid CAS Registry Number.
83507-20-4Relevant articles and documents
A FACILE SYNTHESIS OF THIAZOLIDIN-5-ONES AND THEIR STRUCTURAL ASSINGMENT
Okawara, Tadashi,Nakayama, Kentaro,Furukawa, Mitsuru
, p. 1571 - 1574 (2007/10/02)
The reaction of 1,3-disubstituted thioureas (I) with α-halacyl halides (II) was found to afford thiazolidin-5-ones (IV) in 5percent sodium hydroxide-dichloromethane in the yields of 34-89percent.The structures of IV were discussed in details.
