1.24592

Vitamin B₁₂

for biochemistry

• Synonym(s): Vitamin B₁₂, Cyanocobalamin
• CAS Number: 68-19-9
• Molecular Weight: 1355.37
• UNSPSC Code: 12352203
• EC Index Number: 200-680-0
• NACRES: NA.21

Properties

• Quality Level: 100
• form: solid
• pH: 6.0 (20 °C, 1 g/L in H₂O)
• mp: >300 °C
• solubility: 12 g/L
• bulk density: 450‑600 kg/m³
• storage temp.: 15-25°C
• InChI: 1S/C62H90N13O14P.CN.Co/c1-29-20-39-40(21-30(29)2)75(28-70-39)57-52(84)53(41(27-76)87-57)89-90(85,86)88-31(3)26-69-49(83)18-19-59(8)37(22-46(66)80)56-62(11)61(10,25-48(68)82)36(14-17-45(65)79)51(74-62)33(5)55-60(9,24-47(67)81)34(12-15-43(63)77)38(71-55)23-42-58(6,7)35(13-16-44(64)78)50(72-42)32(4)54(59)73-56;1-2;/h20-21,23,28,31,34-37,41,52-53,56-57,76,84H,12-19,22,24-27H2,1-11H3,(H15,63,64,65,66,67,68,69,71,72,73,74,77,78,79,80,81,82,83,85,86);;/q;-1;+3/p-2/t31-,34-,35-,36-,37+,41-,52-,53-,56-,57+,59-,60+,61+,62+;;/m1../s1
• InChI key: FDJOLVPMNUYSCM-WZHZPDAFSA-L

Description

General description

for biochemistry

Application

Vitamin B₁₂ for biochemistry. CAS 68-19-9, pH 6.0 (1 g/l, H₂O, 20 °C).

Analysis Note

Assay (photometric, calculated on dried substance)97.0 - 100.0 %Identity (IR-spectrum)conformsAbsorption ratio (A 361 nm/278 nm)1.70 - 1.88Absorption ratio (A 361 nm/550 nm)3.15 - 3.40Absorption ratio (A 351 nm/361 nm)0.57 - 0.65Acetone (HS-GC)≤ 5000 ppmOther residual solvents (ICH Q3C)excluded by production processRelated substances (HPLC)≤ 3.0 %Loss on Drying (105 °C)≤ 4.0 %

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1