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129997-27-9

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129997-27-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 129997-27-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,9,9 and 7 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 129997-27:
(8*1)+(7*2)+(6*9)+(5*9)+(4*9)+(3*7)+(2*2)+(1*7)=189
189 % 10 = 9
So 129997-27-9 is a valid CAS Registry Number.

129997-27-9Relevant articles and documents

Sn(IV) Multiporphyrin Arrays as Tunable Photoactive Systems

Amati, Agnese,Cavigli, Paolo,Demitri, Nicola,Natali, Mirco,Indelli, Maria Teresa,Iengo, Elisabetta

, p. 4399 - 4411 (2019)

A series of four arrays made of a central Sn(IV) porphyrin as scaffold axially connected, via carboxylate functions, to two free-base porphyrins has been prepared and fully characterized. Three arrays in the series feature the same free-base unit and alte

Synthesis of calix[4]arene-bis(tin(IV)porphyrins) and supramolecular complexes on their basis

Mamardashvili,Chizhova,Mamardashvili

, p. 390 - 397 (2012/07/02)

Selective substitution of one of the two trans hydroxy groups of calix[4]arene-bis(porphyrinato-tin(IV)) resulted in supramolecular tetramer assemblies based thereon with parallel and perpendicular arrangement of tetrapyrrole macrocyclic rings, which were characterized by UV spectroscopy, 1H NMR, and elemental analysis data.

Efficient formation of lipophilic dihydroxotin(IV) porphyrins and bis-porphyrins

Crossley,Thordarson,Wu

, p. 2294 - 2302 (2007/10/03)

Treatment of dichloro- and dicarboxylato-tin(IV) porphyrins with K2CO3 in THF-H2O (4 : 1) is a mild and highly efficient method for formation of dihydroxotin(IV) porphyrins; unlike other reported procedures, this method is

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