140140-90-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 140140-90-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,0,1,4 and 0 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 140140-90:
(8*1)+(7*4)+(6*0)+(5*1)+(4*4)+(3*0)+(2*9)+(1*0)=75
75 % 10 = 5
So 140140-90-5 is a valid CAS Registry Number.
140140-90-5Relevant articles and documents
Synthesis of reactions of 2-methyl-5-(D-arabino-tetrahydroxybutyl)-3-pyrrolecarbohydrazide
El Sadek,Abdel-Baky,El Soccary
, p. 311 - 319 (2007/10/02)
Ethyl 2-methyl-5-(D-arabino-tetra-hydroxybutyl)-3-pyrrole carboxylate was heated under reflux with hydrazine hydrate to give 2-methyl-5-(D-arabino-tetrahydroxybutyl)-3-pyrrole carbolate hydrazide in 89% yield. The structure of the compound obtained was co