133981-25-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 133981-25-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,9,8 and 1 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 133981-25:
(8*1)+(7*3)+(6*3)+(5*9)+(4*8)+(3*1)+(2*2)+(1*5)=136
136 % 10 = 6
So 133981-25-6 is a valid CAS Registry Number.
133981-25-6Relevant articles and documents
THE SYNTHESIS OF CYCLOPHOSPHONODIPEPTIDES
Chen, Ru-Yu,Dan, Shi-Cain
, p. 39 - 48 (2007/10/02)
Dipeptides and cyclodipeptides containing aminoalkyl phosphonyl groups have been synthesized.The geometric isomers of some of them are separated and the molecular structures are confirmed by NMR, IR, MS or X-ray diffraction.