131980-87-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131980-87-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,9,8 and 0 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 131980-87:
(8*1)+(7*3)+(6*1)+(5*9)+(4*8)+(3*0)+(2*8)+(1*7)=135
135 % 10 = 5
So 131980-87-5 is a valid CAS Registry Number.
131980-87-5Relevant articles and documents
SYNTHESIS AND CYCLIZATION OF N-(2-HYDROXYPHENYL)- AND N-(2-BENZYLOXYPHENYL)-β-ALANINES
Mitskyavichyus, V. Yu.,Baltrushis, R. S.,Beresnevichyus, Z.-I. G.
, p. 420 - 423 (2007/10/02)
N-Substituted β-alanines have been synthesized by treating o-aminophenol or o-benzyloxyaniline with acrylic, methacrylic, or crotonic acids.Their cyclization to 2-benzoxazolinones and dihydro-2,4(1H,3H)-pyrimidinediones has been studied.
