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152771-68-1

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152771-68-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 152771-68-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,2,7,7 and 1 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 152771-68:
(8*1)+(7*5)+(6*2)+(5*7)+(4*7)+(3*1)+(2*6)+(1*8)=141
141 % 10 = 1
So 152771-68-1 is a valid CAS Registry Number.

152771-68-1Relevant articles and documents

Iodolactonization of 3-Alkynylthiophene-2-Carboxylic and 3-Alkynylpicolinic Acids for the Synthesis of Fused Heterocycles

Gabriele, Bartolo,Mancuso, Raffaella,Novello, Mariangela,Palumbo Piccionello, Antonio,Russo, Patrizio

supporting information, (2020/06/17)

The iodolactonization of 3-alkynylthiophene-2-carboxylic acids and 3-alkynylpicolinic acids has been investigated. Using I2 as the iodine source and NaHCO3 as the base in MeCN, the process took place smoothly to afford thienopyranone

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