142890-50-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 142890-50-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,8,9 and 0 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 142890-50:
(8*1)+(7*4)+(6*2)+(5*8)+(4*9)+(3*0)+(2*5)+(1*0)=134
134 % 10 = 4
So 142890-50-4 is a valid CAS Registry Number.
142890-50-4Relevant articles and documents
Synthesis of derivatives of methyl 3-deoxy-3-C-formyl-α-D-arabino-pentofuranoside
Benefice-Malouet,Coe,Walker
, p. 293 - 305 (2007/10/02)
Methyl 2,3-anhydro-α-D-lyxofuranoside and some 5-substituted derivatives react with 2-lithio-1,3-dithiane and phenylthiomethyl-lithium at both positions of the epoxide ring, but mainly at C-3. The ratio of the adducts is affected by the nature of the 5-su