129959-74-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 129959-74-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,9,5 and 9 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 129959-74:
(8*1)+(7*2)+(6*9)+(5*9)+(4*5)+(3*9)+(2*7)+(1*4)=186
186 % 10 = 6
So 129959-74-6 is a valid CAS Registry Number.
129959-74-6Relevant articles and documents
Rearrangement of unsym-Azetidinone disulphides to 2β-(thio-substituted methyl)penams
Alpegiani,Guidici,Perrone,Borghi
, p. 3509 - 3512 (2007/10/02)
Two azetidinyl benzothiazolyl disulphides, 3 and 8, were found to rearrange to 2β-(benzothiazolylthiomethyl)penams upon thermolysis in toluene. When an external acid catalyst was added, the reaction became general and could be used as a synthetic tool.