19221-13-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19221-13-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,2,2 and 1 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 19221-13:
(7*1)+(6*9)+(5*2)+(4*2)+(3*1)+(2*1)+(1*3)=87
87 % 10 = 7
So 19221-13-7 is a valid CAS Registry Number.
19221-13-7Relevant academic research and scientific papers
Rearrangement of Sulphonium Ylides of the 1H-1,4-Thiazine Type
Foster, Robert,Gilchrist, Thomas L.
, p. 2249 - 2254 (2007/10/02)
1H-Phenothiazinones 1 bearing benzyl and 3-methylbut-2-enyl substituents on sulphur have been generated.These ylides are not isolable but undergo rearrangement to 2H-phenothiazinones.Migration of the methylbutenyl substituent takes place with allylic inve
